25072565 has 12 divisors (see below), whose sum is σ = 34999596. Its totient is φ = 17192448.

The previous prime is 25072549. The next prime is 25072577. The reversal of 25072565 is 56527052.

It can be written as a sum of positive squares in 2 ways, for example, as 18472804 + 6599761 = 4298^2 + 2569^2 .

It is not a de Polignac number, because 25072565 - 2⁴ = 25072549 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50924 + ... + 51413.

It is an arithmetic number, because the mean of its divisors is an integer number (2916633).

Almost surely, 2^25072565 is an apocalyptic number.

It is an amenable number.

25072565 is a deficient number, since it is larger than the sum of its proper divisors (9927031).

25072565 is a wasteful number, since it uses less digits than its factorization.

25072565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102356 (or 102349 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 25072565 is about 5007.2512419490. The cubic root of 25072565 is about 292.6844090014.

The spelling of 25072565 in words is "twenty-five million, seventy-two thousand, five hundred sixty-five".