13256381875 has 30 divisors (see below), whose sum is σ = 18208105916. Its totient is φ = 9640950000.

The previous prime is 13256381869. The next prime is 13256381891. The reversal of 13256381875 is 57818365231.

It is not a de Polignac number, because 13256381875 - 2¹¹ = 13256379827 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 12021 + ... + 163270.

Almost surely, 2^13256381875 is an apocalyptic number.

13256381875 is a deficient number, since it is larger than the sum of its proper divisors (4951724041).

13256381875 is an equidigital number, since it uses as much as digits as its factorization.

13256381875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175333 (or 175307 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The spelling of 13256381875 in words is "thirteen billion, two hundred fifty-six million, three hundred eighty-one thousand, eight hundred seventy-five".