25265865 has 16 divisors (see below), whose sum is σ = 41112000. Its totient is φ = 13246272.

The previous prime is 25265833. The next prime is 25265869. The reversal of 25265865 is 56856252.

It is a happy number.

It is not a de Polignac number, because 25265865 - 2⁵ = 25265833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25265869) 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, 13390 + ... + 15159.

It is an arithmetic number, because the mean of its divisors is an integer number (2569500).

Almost surely, 2^25265865 is an apocalyptic number.

It is an amenable number.

25265865 is a deficient number, since it is larger than the sum of its proper divisors (15846135).

25265865 is a wasteful number, since it uses less digits than its factorization.

25265865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28616.

The product of its digits is 144000, while the sum is 39.

The square root of 25265865 is about 5026.5161891712. The cubic root of 25265865 is about 293.4346463343.

The spelling of 25265865 in words is "twenty-five million, two hundred sixty-five thousand, eight hundred sixty-five".