25626497 has 24 divisors (see below), whose sum is σ = 30945600. Its totient is φ = 21033216.

The previous prime is 25626493. The next prime is 25626511. The reversal of 25626497 is 79462652.

25626497 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 25626497 - 2² = 25626493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25626493) 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, 71204 + ... + 71562.

It is an arithmetic number, because the mean of its divisors is an integer number (1289400).

Almost surely, 2^25626497 is an apocalyptic number.

It is an amenable number.

25626497 is a deficient number, since it is larger than the sum of its proper divisors (5319103).

25626497 is a wasteful number, since it uses less digits than its factorization.

25626497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 408 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 25626497 is about 5062.2620437903. The cubic root of 25626497 is about 294.8241679363.

The spelling of 25626497 in words is "twenty-five million, six hundred twenty-six thousand, four hundred ninety-seven".