12501555504 has 80 divisors (see below), whose sum is σ = 33389005824. Its totient is φ = 4026528000.

The previous prime is 12501555499. The next prime is 12501555529. The reversal of 12501555504 is 40555510521.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1010154 + ... + 1022454.

Almost surely, 2^12501555504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12501555504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16694502912).

12501555504 is an abundant number, since it is smaller than the sum of its proper divisors (20887450320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12501555504 is a wasteful number, since it uses less digits than its factorization.

12501555504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13026 (or 13020 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 33.

The spelling of 12501555504 in words is "twelve billion, five hundred one million, five hundred fifty-five thousand, five hundred four".