25461680 has 20 divisors (see below), whose sum is σ = 59198592. Its totient is φ = 10184640.

The previous prime is 25461679. The next prime is 25461701. The reversal of 25461680 is 8616452.

It is a tau number, because it is divible by the number of its divisors (20).

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, 159056 + ... + 159215.

Almost surely, 2^25461680 is an apocalyptic number.

25461680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25461680 is an abundant number, since it is smaller than the sum of its proper divisors (33736912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25461680 is a wasteful number, since it uses less digits than its factorization.

25461680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318284 (or 318278 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 25461680 is about 5045.9567972784. The cubic root of 25461680 is about 294.1907534663.

The spelling of 25461680 in words is "twenty-five million, four hundred sixty-one thousand, six hundred eighty".