12505445504 has 16 divisors (see below), whose sum is σ = 24913192470. Its totient is φ = 6252722688.

The previous prime is 12505445501. The next prime is 12505445509. The reversal of 12505445504 is 40554450521.

It can be written as a sum of positive squares in only one way, i.e., 11373795904 + 1131649600 = 106648^2 + 33640^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (12505445501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48849269 + ... + 48849524.

Almost surely, 2^12505445504 is an apocalyptic number.

It is an amenable number.

12505445504 is a deficient number, since it is larger than the sum of its proper divisors (12407746966).

12505445504 is an frugal number, since it uses more digits than its factorization.

12505445504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97698807 (or 97698795 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 12505445504 in words is "twelve billion, five hundred five million, four hundred forty-five thousand, five hundred four".