225571923 has 6 divisors (see below), whose sum is σ = 325826124. Its totient is φ = 150381276.

The previous prime is 225571909. The next prime is 225571967. The reversal of 225571923 is 329175522.

It is not a de Polignac number, because 225571923 - 2⁵ = 225571891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225571993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12531765 + ... + 12531782.

It is an arithmetic number, because the mean of its divisors is an integer number (54304354).

Almost surely, 2^225571923 is an apocalyptic number.

225571923 is a deficient number, since it is larger than the sum of its proper divisors (100254201).

225571923 is a wasteful number, since it uses less digits than its factorization.

225571923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25063553 (or 25063550 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 225571923 is about 15019.0520007090. The cubic root of 225571923 is about 608.7351044483.

The spelling of 225571923 in words is "two hundred twenty-five million, five hundred seventy-one thousand, nine hundred twenty-three".