25628657679 has 12 divisors (see below), whose sum is σ = 37044668856. Its totient is φ = 17074004112.

The previous prime is 25628657653. The next prime is 25628657713. The reversal of 25628657679 is 97675682652.

It is a happy number.

25628657679 is a `hidden beast` number, since 2 + 56 + 2 + 8 + 6 + 576 + 7 + 9 = 666.

It is not a de Polignac number, because 25628657679 - 2⁵ = 25628657647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25628657609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 966837 + ... + 992990.

It is an arithmetic number, because the mean of its divisors is an integer number (3087055738).

Almost surely, 2^25628657679 is an apocalyptic number.

25628657679 is a deficient number, since it is larger than the sum of its proper divisors (11416011177).

25628657679 is a wasteful number, since it uses less digits than its factorization.

25628657679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961286 (or 1961283 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 25628657679 in words is "twenty-five billion, six hundred twenty-eight million, six hundred fifty-seven thousand, six hundred seventy-nine".