25871934513 has 32 divisors (see below), whose sum is σ = 35625744000. Its totient is φ = 16690419200.

The previous prime is 25871934463. The next prime is 25871934527. The reversal of 25871934513 is 31543917852.

It is a cyclic number.

It is not a de Polignac number, because 25871934513 - 2⁹ = 25871934001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25871934553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10148563 + ... + 10151111.

It is an arithmetic number, because the mean of its divisors is an integer number (1113304500).

Almost surely, 2^25871934513 is an apocalyptic number.

It is an amenable number.

25871934513 is a deficient number, since it is larger than the sum of its proper divisors (9753809487).

25871934513 is a wasteful number, since it uses less digits than its factorization.

25871934513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233.

The product of its digits is 907200, while the sum is 48.

The spelling of 25871934513 in words is "twenty-five billion, eight hundred seventy-one million, nine hundred thirty-four thousand, five hundred thirteen".