12531202500 has 60 divisors (see below), whose sum is σ = 36537666704. Its totient is φ = 3341652000.

The previous prime is 12531202477. The next prime is 12531202501. The reversal of 12531202500 is 520213521.

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (12531202501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 827914 + ... + 842913.

Almost surely, 2^12531202500 is an apocalyptic number.

12531202500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12531202500 is an abundant number, since it is smaller than the sum of its proper divisors (24006464204).

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

12531202500 is a wasteful number, since it uses less digits than its factorization.

12531202500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670854 (or 1670837 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The spelling of 12531202500 in words is "twelve billion, five hundred thirty-one million, two hundred two thousand, five hundred".