25570988 has 6 divisors (see below), whose sum is σ = 44749236. Its totient is φ = 12785492.

The previous prime is 25570969. The next prime is 25570991. The reversal of 25570988 is 88907552.

It is a super-2 number, since 2×25570988² = 1307750854592288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3196370 + ... + 3196377.

It is an arithmetic number, because the mean of its divisors is an integer number (7458206).

Almost surely, 2^25570988 is an apocalyptic number.

It is an amenable number.

25570988 is a deficient number, since it is larger than the sum of its proper divisors (19178248).

25570988 is a wasteful number, since it uses less digits than its factorization.

25570988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6392751 (or 6392749 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 25570988 is about 5056.7764435458. The cubic root of 25570988 is about 294.6111433050.

The spelling of 25570988 in words is "twenty-five million, five hundred seventy thousand, nine hundred eighty-eight".