25979391234 has 24 divisors (see below), whose sum is σ = 56308091580. Its totient is φ = 8656810848.

The previous prime is 25979391223. The next prime is 25979391259. The reversal of 25979391234 is 43219397952.

25979391234 is a `hidden beast` number, since 2 + 597 + 9 + 3 + 9 + 12 + 34 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25042113009 + 937278225 = 158247^2 + 30615^2 .

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, 194889 + ... + 299900.

Almost surely, 2^25979391234 is an apocalyptic number.

25979391234 is an abundant number, since it is smaller than the sum of its proper divisors (30328700346).

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

25979391234 is a wasteful number, since it uses less digits than its factorization.

25979391234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497714 (or 497711 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The spelling of 25979391234 in words is "twenty-five billion, nine hundred seventy-nine million, three hundred ninety-one thousand, two hundred thirty-four".