25620525 has 36 divisors (see below), whose sum is σ = 52448032. Its totient is φ = 11711520.

The previous prime is 25620509. The next prime is 25620533. The reversal of 25620525 is 52502652.

It is not a de Polignac number, because 25620525 - 2⁴ = 25620509 is a prime.

It is a super-2 number, since 2×25620525² = 1312822602551250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6559 + ... + 9708.

Almost surely, 2^25620525 is an apocalyptic number.

25620525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25620525 is an abundant number, since it is smaller than the sum of its proper divisors (26827507).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25620525 is a wasteful number, since it uses less digits than its factorization.

25620525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16290 (or 16282 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 25620525 is about 5061.6721545355. The cubic root of 25620525 is about 294.8012642113.

The spelling of 25620525 in words is "twenty-five million, six hundred twenty thousand, five hundred twenty-five".