(Olympia, WA)  --  Lottery officials say a Seattle man has stepped forward to collect his Mega Millions prize of 25-million-dollars.  The man, whose name hasn't been made public, won the Mega Millions jackpot in the July 19th drawing.  The winner has chosen a lump-sum cash option of about 16-million-bucks.  He's Washington's fifth Mega Millions winner of all time and the second in 2016.