25697764 has 12 divisors (see below), whose sum is σ = 45295600. Its totient is φ = 12756168.

The previous prime is 25697759. The next prime is 25697773. The reversal of 25697764 is 46779652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22554 + ... + 23665.

Almost surely, 2^25697764 is an apocalyptic number.

It is an amenable number.

25697764 is a deficient number, since it is larger than the sum of its proper divisors (19597836).

25697764 is a wasteful number, since it uses less digits than its factorization.

25697764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46362 (or 46360 counting only the distinct ones).

The product of its digits is 635040, while the sum is 46.

The square root of 25697764 is about 5069.2962036164. The cubic root of 25697764 is about 295.0972158767.

The spelling of 25697764 in words is "twenty-five million, six hundred ninety-seven thousand, seven hundred sixty-four".