225203520 has 56 divisors (see below), whose sum is σ = 715024224. Its totient is φ = 60054016.

The previous prime is 225203507. The next prime is 225203543. The reversal of 225203520 is 25302522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116334 + ... + 118253.

Almost surely, 2^225203520 is an apocalyptic number.

225203520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225203520 is an abundant number, since it is smaller than the sum of its proper divisors (489820704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225203520 is a wasteful number, since it uses less digits than its factorization.

225203520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234607 (or 234597 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 225203520 is about 15006.7824666049. The cubic root of 225203520 is about 608.4035294406.

The spelling of 225203520 in words is "two hundred twenty-five million, two hundred three thousand, five hundred twenty".