13891694725 has 12 divisors (see below), whose sum is σ = 17229655044. Its totient is φ = 11110805120.

The previous prime is 13891694693. The next prime is 13891694737. The reversal of 13891694725 is 52749619831.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2600082081 + 11291612644 = 50991^2 + 106262^2 .

It is not a de Polignac number, because 13891694725 - 2⁵ = 13891694693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51417 + ... + 174433.

It is an arithmetic number, because the mean of its divisors is an integer number (1435804587).

Almost surely, 2^13891694725 is an apocalyptic number.

It is an amenable number.

13891694725 is a deficient number, since it is larger than the sum of its proper divisors (3337960319).

13891694725 is a wasteful number, since it uses less digits than its factorization.

13891694725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127544 (or 127539 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 55.

The spelling of 13891694725 in words is "thirteen billion, eight hundred ninety-one million, six hundred ninety-four thousand, seven hundred twenty-five".