general_fact: 6505 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 6505 is the number of 9-hexes without holes.
trivia: 6505 is an unremarkable number.
historical_date: October 22nd is the day in 1910 that Dr. Crippen is convicted at the Old Bailey of poisoning his wife and is subsequently hanged at Pentonville Prison in London.