25133865 has 32 divisors (see below), whose sum is σ = 43804800. Its totient is φ = 12257280.

The previous prime is 25133831. The next prime is 25133869. The reversal of 25133865 is 56833152.

It is not a de Polignac number, because 25133865 - 2⁷ = 25133737 is a prime.

It is a super-2 number, since 2×25133865² = 1263422339676450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25133869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6745 + ... + 9785.

It is an arithmetic number, because the mean of its divisors is an integer number (1368900).

Almost surely, 2^25133865 is an apocalyptic number.

It is an amenable number.

25133865 is a deficient number, since it is larger than the sum of its proper divisors (18670935).

25133865 is a wasteful number, since it uses less digits than its factorization.

25133865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3097.

The product of its digits is 21600, while the sum is 33.

The square root of 25133865 is about 5013.3686279786. The cubic root of 25133865 is about 292.9227432432.

The spelling of 25133865 in words is "twenty-five million, one hundred thirty-three thousand, eight hundred sixty-five".