12500012511 has 24 divisors (see below), whose sum is σ = 21073987584. Its totient is φ = 6990886800.

The previous prime is 12500012509. The next prime is 12500012513. The reversal of 12500012511 is 11521000521.

It is an interprime number because it is at equal distance from previous prime (12500012509) and next prime (12500012513).

It is not a de Polignac number, because 12500012511 - 2¹ = 12500012509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500012513) 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, 2107815 + ... + 2113736.

It is an arithmetic number, because the mean of its divisors is an integer number (878082816).

Almost surely, 2^12500012511 is an apocalyptic number.

12500012511 is a deficient number, since it is larger than the sum of its proper divisors (8573975073).

12500012511 is a wasteful number, since it uses less digits than its factorization.

12500012511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221611 (or 4221608 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The spelling of 12500012511 in words is "twelve billion, five hundred million, twelve thousand, five hundred eleven".