25163988 has 24 divisors (see below), whose sum is σ = 59966592. Its totient is φ = 8209344.

The previous prime is 25163981. The next prime is 25163993. The reversal of 25163988 is 88936152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25163981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21745 + ... + 22872.

It is an arithmetic number, because the mean of its divisors is an integer number (2498608).

Almost surely, 2^25163988 is an apocalyptic number.

It is an amenable number.

25163988 is an abundant number, since it is smaller than the sum of its proper divisors (34802604).

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

25163988 is a wasteful number, since it uses less digits than its factorization.

25163988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44671 (or 44669 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 25163988 is about 5016.3719957754. The cubic root of 25163988 is about 293.0397194034.

The spelling of 25163988 in words is "twenty-five million, one hundred sixty-three thousand, nine hundred eighty-eight".