25397525 has 12 divisors (see below), whose sum is σ = 32509824. Its totient is φ = 19662000.

The previous prime is 25397521. The next prime is 25397549. The reversal of 25397525 is 52579352.

It is not a de Polignac number, because 25397525 - 2² = 25397521 is a prime.

It is a super-2 number, since 2×25397525² = 1290068552251250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25397521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15611 + ... + 17160.

It is an arithmetic number, because the mean of its divisors is an integer number (2709152).

Almost surely, 2^25397525 is an apocalyptic number.

25397525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25397525 is a deficient number, since it is larger than the sum of its proper divisors (7112299).

25397525 is a wasteful number, since it uses less digits than its factorization.

25397525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32812 (or 32807 counting only the distinct ones).

The product of its digits is 94500, while the sum is 38.

The square root of 25397525 is about 5039.5957179123. The cubic root of 25397525 is about 293.9434578972.

The spelling of 25397525 in words is "twenty-five million, three hundred ninety-seven thousand, five hundred twenty-five".