25138488 has 32 divisors (see below), whose sum is σ = 64310400. Its totient is φ = 8184288.

The previous prime is 25138481. The next prime is 25138493. The reversal of 25138488 is 88483152.

It is a super-2 number, since 2×25138488² = 1263887157852288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25138481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11148 + ... + 13211.

It is an arithmetic number, because the mean of its divisors is an integer number (2009700).

Almost surely, 2^25138488 is an apocalyptic number.

It is an amenable number.

25138488 is an abundant number, since it is smaller than the sum of its proper divisors (39171912).

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

25138488 is a wasteful number, since it uses less digits than its factorization.

25138488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24411 (or 24407 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 25138488 is about 5013.8296740117. The cubic root of 25138488 is about 292.9407017336.

The spelling of 25138488 in words is "twenty-five million, one hundred thirty-eight thousand, four hundred eighty-eight".