25791388 has 12 divisors (see below), whose sum is σ = 51582832. Its totient is φ = 11053440.

The previous prime is 25791383. The next prime is 25791401. The reversal of 25791388 is 88319752.

25791388 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25791383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460533 + ... + 460588.

Almost surely, 2^25791388 is an apocalyptic number.

25791388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25791388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25791388 is a wasteful number, since it uses less digits than its factorization.

25791388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921132 (or 921130 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 25791388 is about 5078.5222260024. The cubic root of 25791388 is about 295.4551548935.

The spelling of 25791388 in words is "twenty-five million, seven hundred ninety-one thousand, three hundred eighty-eight".