25457992 has 32 divisors (see below), whose sum is σ = 54907200. Its totient is φ = 10839744.

The previous prime is 25457983. The next prime is 25458001. The reversal of 25457992 is 29975452.

It is an interprime number because it is at equal distance from previous prime (25457983) and next prime (25458001).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7734 + ... + 10522.

It is an arithmetic number, because the mean of its divisors is an integer number (1715850).

Almost surely, 2^25457992 is an apocalyptic number.

It is an amenable number.

25457992 is an abundant number, since it is smaller than the sum of its proper divisors (29449208).

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

25457992 is a wasteful number, since it uses less digits than its factorization.

25457992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965 (or 2961 counting only the distinct ones).

The product of its digits is 226800, while the sum is 43.

The square root of 25457992 is about 5045.5913429448. The cubic root of 25457992 is about 294.1765487491.

The spelling of 25457992 in words is "twenty-five million, four hundred fifty-seven thousand, nine hundred ninety-two".