25520364 has 18 divisors (see below), whose sum is σ = 64509900. Its totient is φ = 8506776.

The previous prime is 25520353. The next prime is 25520381. The reversal of 25520364 is 46302552.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 354414 + ... + 354485.

Almost surely, 2^25520364 is an apocalyptic number.

It is an amenable number.

25520364 is an abundant number, since it is smaller than the sum of its proper divisors (38989536).

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

25520364 is a wasteful number, since it uses less digits than its factorization.

25520364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708909 (or 708904 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 25520364 is about 5051.7684032426. The cubic root of 25520364 is about 294.4165966886.

The spelling of 25520364 in words is "twenty-five million, five hundred twenty thousand, three hundred sixty-four".