25213660 has 24 divisors (see below), whose sum is σ = 53272800. Its totient is φ = 10023744.

The previous prime is 25213651. The next prime is 25213697. The reversal of 25213660 is 6631252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435 + ... + 7114.

It is an arithmetic number, because the mean of its divisors is an integer number (2219700).

Almost surely, 2^25213660 is an apocalyptic number.

25213660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25213660 is an abundant number, since it is smaller than the sum of its proper divisors (28059140).

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

25213660 is a wasteful number, since it uses less digits than its factorization.

25213660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7725 (or 7723 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 25213660 is about 5021.3205434427. The cubic root of 25213660 is about 293.2324061641.

The spelling of 25213660 in words is "twenty-five million, two hundred thirteen thousand, six hundred sixty".