12487974625 has 24 divisors (see below), whose sum is σ = 18129489768. Its totient is φ = 8563178400.

The previous prime is 12487974617. The next prime is 12487974641. The reversal of 12487974625 is 52647978421.

It can be written as a sum of positive squares in 4 ways, for example, as 117418896 + 12370555729 = 10836^2 + 111223^2 .

It is not a de Polignac number, because 12487974625 - 2³ = 12487974617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1013302 + ... + 1025551.

It is an arithmetic number, because the mean of its divisors is an integer number (755395407).

Almost surely, 2^12487974625 is an apocalyptic number.

It is an amenable number.

12487974625 is a deficient number, since it is larger than the sum of its proper divisors (5641515143).

12487974625 is an equidigital number, since it uses as much as digits as its factorization.

12487974625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038882 (or 2038865 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 55.

The spelling of 12487974625 in words is "twelve billion, four hundred eighty-seven million, nine hundred seventy-four thousand, six hundred twenty-five".