25015797 has 20 divisors (see below), whose sum is σ = 38170176. Its totient is φ = 16319880.

The previous prime is 25015763. The next prime is 25015817. The reversal of 25015797 is 79751052.

It is not a de Polignac number, because 25015797 - 2²⁰ = 23967221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25015747) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 522 + ... + 7092.

Almost surely, 2^25015797 is an apocalyptic number.

25015797 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

25015797 is a deficient number, since it is larger than the sum of its proper divisors (13154379).

25015797 is an equidigital number, since it uses as much as digits as its factorization.

25015797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6630 (or 6621 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The square root of 25015797 is about 5001.5794505336. The cubic root of 25015797 is about 292.4633484648.

The spelling of 25015797 in words is "twenty-five million, fifteen thousand, seven hundred ninety-seven".