25256988 has 24 divisors (see below), whose sum is σ = 65481360. Its totient is φ = 8418960.

The previous prime is 25256963. The next prime is 25256993. The reversal of 25256988 is 88965252.

25256988 is a `hidden beast` number, since 2 + 5 + 2 + 569 + 88 = 666.

It is a super-4 number, since 4×25256988⁴ (a number of 31 digits) contains 4444 as substring.

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, 116823 + ... + 117038.

It is an arithmetic number, because the mean of its divisors is an integer number (2728390).

Almost surely, 2^25256988 is an apocalyptic number.

It is an amenable number.

25256988 is an abundant number, since it is smaller than the sum of its proper divisors (40224372).

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

25256988 is a wasteful number, since it uses less digits than its factorization.

25256988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233874 (or 233866 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 25256988 is about 5025.6330944469. The cubic root of 25256988 is about 293.4002768470.

It can be divided in two parts, 25256 and 988, that added together give a square (26244 = 162²).

The spelling of 25256988 in words is "twenty-five million, two hundred fifty-six thousand, nine hundred eighty-eight".