25131672 has 24 divisors (see below), whose sum is σ = 68065140. Its totient is φ = 8377200.

The previous prime is 25131671. The next prime is 25131677. The reversal of 25131672 is 27613152.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25131671) 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, 174454 + ... + 174597.

Almost surely, 2^25131672 is an apocalyptic number.

It is an amenable number.

25131672 is an abundant number, since it is smaller than the sum of its proper divisors (42933468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25131672 is a wasteful number, since it uses less digits than its factorization.

25131672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349063 (or 349056 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 25131672 is about 5013.1499079920. The cubic root of 25131672 is about 292.9142235526.

The spelling of 25131672 in words is "twenty-five million, one hundred thirty-one thousand, six hundred seventy-two".