13815396125 has 12 divisors (see below), whose sum is σ = 17243254548. Its totient is φ = 11051265600.

The previous prime is 13815396107. The next prime is 13815396139. The reversal of 13815396125 is 52169351831.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 13303776964 + 511619161 = 115342^2 + 22619^2 .

It is not a de Polignac number, because 13815396125 - 2⁶ = 13815396061 is a prime.

It is a Duffinian number.

It is a Curzon 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, 1308869 + ... + 1319381.

It is an arithmetic number, because the mean of its divisors is an integer number (1436937879).

Almost surely, 2^13815396125 is an apocalyptic number.

It is an amenable number.

13815396125 is a deficient number, since it is larger than the sum of its proper divisors (3427858423).

13815396125 is an frugal number, since it uses more digits than its factorization.

13815396125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21041 (or 10518 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The spelling of 13815396125 in words is "thirteen billion, eight hundred fifteen million, three hundred ninety-six thousand, one hundred twenty-five".