12500001387500 has 72 divisors (see below), whose sum is σ = 29827640002608. Its totient is φ = 4545455000000.

The previous prime is 12500001387493. The next prime is 12500001387527. The reversal of 12500001387500 is 578310000521.

12500001387500 is a modest number, since divided by 1387500 gives 12500 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 23 ways as a sum of consecutive naturals, for example, 45317051 + ... + 45592050.

It is an arithmetic number, because the mean of its divisors is an integer number (414272777814).

Almost surely, 2^{12500001387500} is an apocalyptic number.

12500001387500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12500001387500 is an abundant number, since it is smaller than the sum of its proper divisors (17327638615108).

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

12500001387500 is an equidigital number, since it uses as much as digits as its factorization.

12500001387500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90909141 (or 90909119 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 12500001387500 in words is "twelve trillion, five hundred billion, one million, three hundred eighty-seven thousand, five hundred".