Fait général: 20595 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 20595 is an uninteresting number.
Culture générale: 20595 is an uninteresting number.
Date historique: May 20th is the day in 1609 that Shakespeare's sonnets are first published in London, perhaps illicitly, by the publisher Thomas Thorpe.