225020913 has 16 divisors (see below), whose sum is σ = 329984256. Its totient is φ = 135527040.

The previous prime is 225020903. The next prime is 225020951. The reversal of 225020913 is 319020522.

It is not a de Polignac number, because 225020913 - 2¹⁴ = 225004529 is a prime.

It is a super-2 number, since 2×225020913² = 101268822574707138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225020903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59548 + ... + 63213.

It is an arithmetic number, because the mean of its divisors is an integer number (20624016).

Almost surely, 2^225020913 is an apocalyptic number.

It is an amenable number.

225020913 is a deficient number, since it is larger than the sum of its proper divisors (104963343).

225020913 is a wasteful number, since it uses less digits than its factorization.

225020913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122824.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 225020913 is about 15000.6970838025. The cubic root of 225020913 is about 608.2390429869.

The spelling of 225020913 in words is "two hundred twenty-five million, twenty thousand, nine hundred thirteen".