12500012499 has 24 divisors (see below), whose sum is σ = 18059578992. Its totient is φ = 7687105920.

The previous prime is 12500012491. The next prime is 12500012509. The reversal of 12500012499 is 99421000521.

It is not a de Polignac number, because 12500012499 - 2³ = 12500012491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12500012491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 822429 + ... + 837489.

It is an arithmetic number, because the mean of its divisors is an integer number (752482458).

Almost surely, 2^12500012499 is an apocalyptic number.

12500012499 is a deficient number, since it is larger than the sum of its proper divisors (5559566493).

12500012499 is a wasteful number, since it uses less digits than its factorization.

12500012499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16727 (or 16714 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 12500012499 in words is "twelve billion, five hundred million, twelve thousand, four hundred ninety-nine".