25680668 has 12 divisors (see below), whose sum is σ = 48398280. Its totient is φ = 11852592.

The previous prime is 25680649. The next prime is 25680671. The reversal of 25680668 is 86608652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246878 + ... + 246981.

It is an arithmetic number, because the mean of its divisors is an integer number (4033190).

Almost surely, 2^25680668 is an apocalyptic number.

It is an amenable number.

25680668 is a deficient number, since it is larger than the sum of its proper divisors (22717612).

25680668 is a wasteful number, since it uses less digits than its factorization.

25680668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493876 (or 493874 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 25680668 is about 5067.6096929420. The cubic root of 25680668 is about 295.0317613988.

The spelling of 25680668 in words is "twenty-five million, six hundred eighty thousand, six hundred sixty-eight".