Metro

Joseph Brooks leaves $250K to personal trainer, nothing to four kids

WILL & WON'T:Joseph Brooks shut out his four kids, including accused killer Nicholas (above), leaving up to a quarter-million dollars to personal trainer Danielle Radosti.

WILL & WON’T:Joseph Brooks shut out his four kids, including accused killer Nicholas (above), leaving up to a quarter-million dollars to personal trainer Danielle Radosti.

WILL & WON'T:Joseph Brooks shut out his four kids, including accused killer Nicholas, leaving up to a quarter-million dollars to personal trainer Danielle Radosti (above).

WILL & WON’T:Joseph Brooks shut out his four kids, including accused killer Nicholas, leaving up to a quarter-million dollars to personal trainer Danielle Radosti (above).

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Sicko songwriter Joseph Brooks screwed over his four kids after killing himself — leaving them not a single cent in his will — but he sure did “light up” the life of his pretty personal trainer, by leaving her all of his money.

Brooks, who committed suicide last month while facing sex-assault charges, left up to a quarter-million dollars to young Upper East Side personal trainer Danielle Radosti, described in his will as a “friend,” it was revealed yesterday.

But Radosti’s payday might be delayed — permanently — because of a snarled set of legal issues linked to both to Brooks’ alleged sex crimes and pending murder charges against his son Nicholas.

Radosti, 30, in recent years began training Brooks at The Sports Club/LA gym on East 61st Street, and the brunette and her husband soon became grew close to the songwriter, who won a 1977 Academy Award for his tear-jerker, “You Light Up My Life.”

“Joe was in many ways like a grandfather to us,” said Radosti’s husband, Christopher Mase, who found Brooks dead last month in Brooks’ Upper East Side apartment after he’d hooked himself up to a mail-order helium-tank suicide kit.

“We are still in deep mourning over his passing,” said Mase of Brooks — who had been under indictment for allegedly raping or molesting 13 would-be starlets who he lured to his lair by promising them auditions for movies that never existed.

If Radosti had died before Brooks, the songwriter’s will called for his money to go to Mase.

The will noted that he “has deliberately made no provisions under this trust agreement for his daughters Amanda Brooks and Gabrielle E. Brooks or his sons Nicholas Brooks and Jeffrey Brooks.”

Nicholas, 25, is locked up on Rikers Island on charges that he choked his girlfriend, swimsuit designer Sylvie Cachay, and drowned her in the bathtub of a room at the Soho House hotel last December.

A lawyer for Cachay’s family, which intends to go after Nicholas’ assets, said a prior legal action by the son against Joseph Brooks may give Nicholas claim to some or all of the money left Radosti. Nicholas originally was the beneficiary of a large “insurance trust” that Joseph set up for his son, but later used as collateral for a $300,000 loan, said Cachay family lawyer Susan Kartan.

When Nicholas found out about that, he sued his dad, and won a judgment for the money — giving the son dibs on Joseph’s estate, Kartan noted.

Also, last year, a Washington state judge ordered Joseph Brooks to pay one of his victims $2 million, which could also affect whether his estate pays Radosti.

dan.mangan@nypost.com