25497988 has 12 divisors (see below), whose sum is σ = 44658432. Its totient is φ = 12738440.

The previous prime is 25497973. The next prime is 25497991. The reversal of 25497988 is 88979452.

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, 5781 + ... + 9187.

It is an arithmetic number, because the mean of its divisors is an integer number (3721536).

Almost surely, 2^25497988 is an apocalyptic number.

It is an amenable number.

25497988 is a deficient number, since it is larger than the sum of its proper divisors (19160444).

25497988 is a wasteful number, since it uses less digits than its factorization.

25497988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5282 (or 5280 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 52.

The square root of 25497988 is about 5049.5532475656. The cubic root of 25497988 is about 294.3305243518.

The spelling of 25497988 in words is "twenty-five million, four hundred ninety-seven thousand, nine hundred eighty-eight".