Fait mathématique: 1625 is the number of circular permutations of a set with 8 elements with no element being mapped to its successor.
Culture générale: 1625 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: June 12th is the day in 1967 that the United States Supreme Court in Loving v. Virginia declares all U.S. state laws which prohibit interracial marriage to be unconstitutional.