11807421925 has 12 divisors (see below), whose sum is σ = 15767450020. Its totient is φ = 8719326720.

The previous prime is 11807421881. The next prime is 11807421947. The reversal of 11807421925 is 52912470811.

It can be written as a sum of positive squares in 6 ways, for example, as 3161025729 + 8646396196 = 56223^2 + 92986^2 .

It is not a de Polignac number, because 11807421925 - 2⁹ = 11807421413 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18164940 + ... + 18165589.

Almost surely, 2^11807421925 is an apocalyptic number.

It is an amenable number.

11807421925 is a deficient number, since it is larger than the sum of its proper divisors (3960028095).

11807421925 is a wasteful number, since it uses less digits than its factorization.

11807421925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36330552 (or 36330547 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 11807421925 in words is "eleven billion, eight hundred seven million, four hundred twenty-one thousand, nine hundred twenty-five".