25290056 has 16 divisors (see below), whose sum is σ = 51729840. Its totient is φ = 11495440.

The previous prime is 25290043. The next prime is 25290061. The reversal of 25290056 is 65009252.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143606 + ... + 143781.

It is an arithmetic number, because the mean of its divisors is an integer number (3233115).

Almost surely, 2^25290056 is an apocalyptic number.

It is an amenable number.

25290056 is an abundant number, since it is smaller than the sum of its proper divisors (26439784).

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

25290056 is a wasteful number, since it uses less digits than its factorization.

25290056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287404 (or 287400 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 25290056 is about 5028.9219520689. The cubic root of 25290056 is about 293.5282668936.

The spelling of 25290056 in words is "twenty-five million, two hundred ninety thousand, fifty-six".