25715265 has 32 divisors (see below), whose sum is σ = 45204480. Its totient is φ = 12424896.

The previous prime is 25715243. The next prime is 25715267. The reversal of 25715265 is 56251752.

It is not a de Polignac number, because 25715265 - 2⁸ = 25715009 is a prime.

It is a super-2 number, since 2×25715265² = 1322549708040450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25715267) 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, 4594 + ... + 8516.

It is an arithmetic number, because the mean of its divisors is an integer number (1412640).

Almost surely, 2^25715265 is an apocalyptic number.

It is an amenable number.

25715265 is a deficient number, since it is larger than the sum of its proper divisors (19489215).

25715265 is a wasteful number, since it uses less digits than its factorization.

25715265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973.

The product of its digits is 21000, while the sum is 33.

The square root of 25715265 is about 5071.0220863254. The cubic root of 25715265 is about 295.1641908922.

The spelling of 25715265 in words is "twenty-five million, seven hundred fifteen thousand, two hundred sixty-five".