25431164 has 12 divisors (see below), whose sum is σ = 48550488. Its totient is φ = 11559600.

The previous prime is 25431163. The next prime is 25431199. The reversal of 25431164 is 46113452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25431163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288947 + ... + 289034.

It is an arithmetic number, because the mean of its divisors is an integer number (4045874).

Almost surely, 2^25431164 is an apocalyptic number.

It is an amenable number.

25431164 is a deficient number, since it is larger than the sum of its proper divisors (23119324).

25431164 is a wasteful number, since it uses less digits than its factorization.

25431164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577996 (or 577994 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 25431164 is about 5042.9320836196. The cubic root of 25431164 is about 294.0731765956.

The spelling of 25431164 in words is "twenty-five million, four hundred thirty-one thousand, one hundred sixty-four".