25138768 has 20 divisors (see below), whose sum is σ = 50278528. Its totient is φ = 12163680.

The previous prime is 25138759. The next prime is 25138783. The reversal of 25138768 is 86783152.

25138768 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 25138768.

It is a congruent number.

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, 24846 + ... + 25837.

Almost surely, 2^25138768 is an apocalyptic number.

It is an amenable number.

25138768 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.

25138768 is a wasteful number, since it uses less digits than its factorization.

25138768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50722 (or 50716 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 25138768 is about 5013.8575967014. The cubic root of 25138768 is about 292.9417893500.

The spelling of 25138768 in words is "twenty-five million, one hundred thirty-eight thousand, seven hundred sixty-eight".