12501387775 has 12 divisors (see below), whose sum is σ = 15526307344. Its totient is φ = 9985248000.

The previous prime is 12501387749. The next prime is 12501387797. The reversal of 12501387775 is 57778310521.

It is not a de Polignac number, because 12501387775 - 2²¹ = 12499290623 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 380466 + ... + 412015.

Almost surely, 2^12501387775 is an apocalyptic number.

12501387775 is a deficient number, since it is larger than the sum of its proper divisors (3024919569).

12501387775 is an equidigital number, since it uses as much as digits as its factorization.

12501387775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793122 (or 793117 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 46.

The spelling of 12501387775 in words is "twelve billion, five hundred one million, three hundred eighty-seven thousand, seven hundred seventy-five".