25513250 has 64 divisors (see below), whose sum is σ = 55710720. Its totient is φ = 8568000.

The previous prime is 25513247. The next prime is 25513261. The reversal of 25513250 is 5231552.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106631 + ... + 106869.

It is an arithmetic number, because the mean of its divisors is an integer number (870480).

Almost surely, 2^25513250 is an apocalyptic number.

25513250 is an abundant number, since it is smaller than the sum of its proper divisors (30197470).

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

25513250 is a wasteful number, since it uses less digits than its factorization.

25513250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 25513250 is about 5051.0642442955. The cubic root of 25513250 is about 294.3892371740.

The spelling of 25513250 in words is "twenty-five million, five hundred thirteen thousand, two hundred fifty".