225712931 has 2 divisors, whose sum is σ = 225712932. Its totient is φ = 225712930.

The previous prime is 225712897. The next prime is 225712967. The reversal of 225712931 is 139217522.

225712931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225712931 - 2¹⁴ = 225696547 is a prime.

It is a super-2 number, since 2×225712931² = 101892654441221522, which contains 22 as substring.

It is a Chen prime.

It is equal to p_12419744 and since 225712931 and 12419744 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (225712631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112856465 + 112856466.

It is an arithmetic number, because the mean of its divisors is an integer number (112856466).

Almost surely, 2^225712931 is an apocalyptic number.

225712931 is a deficient number, since it is larger than the sum of its proper divisors (1).

225712931 is an equidigital number, since it uses as much as digits as its factorization.

225712931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 225712931 is about 15023.7455715943. The cubic root of 225712931 is about 608.8619208221.

The spelling of 225712931 in words is "two hundred twenty-five million, seven hundred twelve thousand, nine hundred thirty-one".