-225 is an odd number.
-225 is a Harshad number, which means it is divisible by the sum of its digits (2 + 2 + 5 = 9, and -225 is divisible by 9).
In binary, -225 is represented as 1111111111111111111111111111111111111111111111111111111100011111.
In hex, -225 is represented as ffffffffffffff1f.