285437225 has 24 divisors (see below), whose sum is σ = 383502240. Its totient is φ = 209905920.

The previous prime is 285437189. The next prime is 285437237. The reversal of 285437225 is 522734582.

It is not a de Polignac number, because 285437225 - 2²⁴ = 268660009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10466 + ... + 26084.

It is an arithmetic number, because the mean of its divisors is an integer number (15979260).

Almost surely, 2^285437225 is an apocalyptic number.

285437225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285437225 is a deficient number, since it is larger than the sum of its proper divisors (98065015).

285437225 is a wasteful number, since it uses less digits than its factorization.

285437225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15689 (or 15684 counting only the distinct ones).

The product of its digits is 134400, while the sum is 38.

The square root of 285437225 is about 16894.8875403182. The cubic root of 285437225 is about 658.4207920269.

The spelling of 285437225 in words is "two hundred eighty-five million, four hundred thirty-seven thousand, two hundred twenty-five".