Fatto generale: 20585 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 20585 is a boring number.
Trivia: 20585 is an uninteresting number.
Data storica: May 10th is the day in 1893 that the Supreme Court of the United States rules in Nix v. Hedden that a tomato is a vegetable, not a fruit, under the Tariff Act of 1883.