Fatto generale: 1585 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1585 is an uninteresting number.
Trivia: 1585 is an unremarkable number.
Data storica: May 3rd is the day in 1491 that Kongo monarch Nkuwu Nzinga is baptised by Portuguese missionaries, adopting the baptismal name of João I.