25680764 has 12 divisors (see below), whose sum is σ = 44989224. Its totient is φ = 12826704.

The previous prime is 25680763. The next prime is 25680791. The reversal of 25680764 is 46708652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25680763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1634 + ... + 7350.

It is an arithmetic number, because the mean of its divisors is an integer number (3749102).

Almost surely, 2^25680764 is an apocalyptic number.

It is an amenable number.

25680764 is a deficient number, since it is larger than the sum of its proper divisors (19308460).

25680764 is a wasteful number, since it uses less digits than its factorization.

25680764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6844 (or 6842 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 25680764 is about 5067.6191648544. The cubic root of 25680764 is about 295.0321290296.

The spelling of 25680764 in words is "twenty-five million, six hundred eighty thousand, seven hundred sixty-four".