25979638234 has 24 divisors (see below), whose sum is σ = 43275825684. Its totient is φ = 11687174400.

The previous prime is 25979638229. The next prime is 25979638261. The reversal of 25979638234 is 43283697952.

It can be written as a sum of positive squares in 2 ways, for example, as 24649942009 + 1329696225 = 157003^2 + 36465^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529897 + ... + 576844.

Almost surely, 2^25979638234 is an apocalyptic number.

25979638234 is a deficient number, since it is larger than the sum of its proper divisors (17296187450).

25979638234 is a wasteful number, since it uses less digits than its factorization.

25979638234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106862 (or 1106851 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 58.

The spelling of 25979638234 in words is "twenty-five billion, nine hundred seventy-nine million, six hundred thirty-eight thousand, two hundred thirty-four".