25680807 has 10 divisors (see below), whose sum is σ = 38362808. Its totient is φ = 17120484.

The previous prime is 25680791. The next prime is 25680821. The reversal of 25680807 is 70808652.

It is not a de Polignac number, because 25680807 - 2⁴ = 25680791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25680877) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 158443 + ... + 158604.

Almost surely, 2^25680807 is an apocalyptic number.

25680807 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

25680807 is a deficient number, since it is larger than the sum of its proper divisors (12682001).

25680807 is an equidigital number, since it uses as much as digits as its factorization.

25680807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317059 (or 317050 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 25680807 is about 5067.6234074761. The cubic root of 25680807 is about 295.0322936973.

The spelling of 25680807 in words is "twenty-five million, six hundred eighty thousand, eight hundred seven".