25556012 has 12 divisors (see below), whose sum is σ = 44758560. Its totient is φ = 12767856.

The previous prime is 25555993. The next prime is 25556021. The reversal of 25556012 is 21065552.

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, 7853 + ... + 10619.

It is an arithmetic number, because the mean of its divisors is an integer number (3729880).

Almost surely, 2^25556012 is an apocalyptic number.

It is an amenable number.

25556012 is a deficient number, since it is larger than the sum of its proper divisors (19202548).

25556012 is a wasteful number, since it uses less digits than its factorization.

25556012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080 (or 5078 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 25556012 is about 5055.2954414159. The cubic root of 25556012 is about 294.5536177205.

The spelling of 25556012 in words is "twenty-five million, five hundred fifty-six thousand, twelve".