25231586013 has 12 divisors (see below), whose sum is σ = 36454740348. Its totient is φ = 16816849920.

The previous prime is 25231585987. The next prime is 25231586027. The reversal of 25231586013 is 31068513252.

25231586013 is a `hidden beast` number, since 25 + 23 + 1 + 5 + 8 + 601 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2816106489 + 22415479524 = 53067^2 + 149718^2 .

It is not a de Polignac number, because 25231586013 - 2⁹ = 25231585501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25231586713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312420 + ... + 384797.

It is an arithmetic number, because the mean of its divisors is an integer number (3037895029).

Almost surely, 2^25231586013 is an apocalyptic number.

It is an amenable number.

25231586013 is a deficient number, since it is larger than the sum of its proper divisors (11223154335).

25231586013 is a wasteful number, since it uses less digits than its factorization.

25231586013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701244 (or 701241 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 25231586013 in words is "twenty-five billion, two hundred thirty-one million, five hundred eighty-six thousand, thirteen".