25968657 has 24 divisors (see below), whose sum is σ = 40993792. Its totient is φ = 14525280.

The previous prime is 25968653. The next prime is 25968661. The reversal of 25968657 is 75686952.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25968653) and next prime (25968661).

It is not a de Polignac number, because 25968657 - 2² = 25968653 is a prime.

It is a super-2 number, since 2×25968657² = 1348742292767298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25968653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1968 + ... + 7470.

Almost surely, 2^25968657 is an apocalyptic number.

It is an amenable number.

25968657 is a deficient number, since it is larger than the sum of its proper divisors (15025135).

25968657 is a wasteful number, since it uses less digits than its factorization.

25968657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5541 (or 5530 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 25968657 is about 5095.9451527661. The cubic root of 25968657 is about 296.1305160062.

The spelling of 25968657 in words is "twenty-five million, nine hundred sixty-eight thousand, six hundred fifty-seven".