25906680 has 48 divisors (see below), whose sum is σ = 84197880. Its totient is φ = 6908352.

The previous prime is 25906679. The next prime is 25906687. The reversal of 25906680 is 8660952.

25906680 is a `hidden beast` number, since 2 + 590 + 6 + 68 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25906687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35622 + ... + 36341.

Almost surely, 2^25906680 is an apocalyptic number.

25906680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25906680 is an abundant number, since it is smaller than the sum of its proper divisors (58291200).

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

25906680 is a wasteful number, since it uses less digits than its factorization.

25906680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71980 (or 71973 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 25906680 is about 5089.8605088941. The cubic root of 25906680 is about 295.8947458741.

The spelling of 25906680 in words is "twenty-five million, nine hundred six thousand, six hundred eighty".