Berezovsky laughed off the reported figure when contacted by The Associated Press.
"Other people may be interested in the financial details, but (the court case) is at a stage where the financial side is not mentioned," he said.
It was up to the court to decide the payout for Galina Besharova, his wife of 18 years, he added.
A Family Court judge in London granted Besharova the "decree nisi," or an initial divorce decree Thursday. After six weeks, the couple will probably be granted a decree absolute and the divorce will become final.
Berezovsky does not intend to contest the divorce request.
Forbes magazine estimated that the former Kremlin insider is worth $1.1 billion in a 2007 list of the world's richest people. A powerful member of former Russian President Boris Yeltsin's circle, Berezovsky fled to Britain in 2001 after Vladimir Putin tightened his grip on power.