225389931 has 16 divisors (see below), whose sum is σ = 324328704. Its totient is φ = 138405024.

The previous prime is 225389929. The next prime is 225389939. The reversal of 225389931 is 139983522.

It is not a de Polignac number, because 225389931 - 2¹ = 225389929 is a prime.

It is a super-2 number, since 2×225389931² = 101601241992369522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225389939) 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, 13060 + ... + 24926.

It is an arithmetic number, because the mean of its divisors is an integer number (20270544).

Almost surely, 2^225389931 is an apocalyptic number.

225389931 is a deficient number, since it is larger than the sum of its proper divisors (98938773).

225389931 is a wasteful number, since it uses less digits than its factorization.

225389931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12370.

The product of its digits is 116640, while the sum is 42.

The square root of 225389931 is about 15012.9920735342. The cubic root of 225389931 is about 608.5713507256.

The spelling of 225389931 in words is "two hundred twenty-five million, three hundred eighty-nine thousand, nine hundred thirty-one".