12500000138875 has 8 divisors (see below), whose sum is σ = 15600000173472. Its totient is φ = 10000000111000.

The previous prime is 12500000138849. The next prime is 12500000138887. The reversal of 12500000138875 is 57883100000521.

It is a de Polignac number, because none of the positive numbers 2^k-12500000138875 is a prime.

It is a Duffinian number.

12500000138875 is a modest number, since divided by 138875 gives 125000 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50000000431 + ... + 50000000680.

It is an arithmetic number, because the mean of its divisors is an integer number (1950000021684).

Almost surely, 2^{12500000138875} is an apocalyptic number.

12500000138875 is a deficient number, since it is larger than the sum of its proper divisors (3100000034597).

12500000138875 is an equidigital number, since it uses as much as digits as its factorization.

12500000138875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100000001126 (or 100000001116 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 12500000138875 in words is "twelve trillion, five hundred billion, one hundred thirty-eight thousand, eight hundred seventy-five".