25680679 has 4 divisors (see below), whose sum is σ = 26509120. Its totient is φ = 24852240.

The previous prime is 25680671. The next prime is 25680691. The reversal of 25680679 is 97608652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25680679 - 2³ = 25680671 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 (25680671) 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, 414174 + ... + 414235.

It is an arithmetic number, because the mean of its divisors is an integer number (6627280).

Almost surely, 2^25680679 is an apocalyptic number.

25680679 is a deficient number, since it is larger than the sum of its proper divisors (828441).

25680679 is an equidigital number, since it uses as much as digits as its factorization.

25680679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828440.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 25680679 is about 5067.6107782662. The cubic root of 25680679 is about 295.0318035232.

The spelling of 25680679 in words is "twenty-five million, six hundred eighty thousand, six hundred seventy-nine".