25742997 has 24 divisors (see below), whose sum is σ = 42644160. Its totient is φ = 14659200.

The previous prime is 25742993. The next prime is 25743007. The reversal of 25742997 is 79924752.

It is not a de Polignac number, because 25742997 - 2² = 25742993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25742993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24754 + ... + 25772.

It is an arithmetic number, because the mean of its divisors is an integer number (1776840).

Almost surely, 2^25742997 is an apocalyptic number.

It is an amenable number.

25742997 is a deficient number, since it is larger than the sum of its proper divisors (16901163).

25742997 is a wasteful number, since it uses less digits than its factorization.

25742997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1430 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 25742997 is about 5073.7557095312. The cubic root of 25742997 is about 295.2702569794.

The spelling of 25742997 in words is "twenty-five million, seven hundred forty-two thousand, nine hundred ninety-seven".