13251320125 has 8 divisors (see below), whose sum is σ = 16537647672. Its totient is φ = 10601056000.

The previous prime is 13251320111. The next prime is 13251320143. The reversal of 13251320125 is 52102315231.

It can be written as a sum of positive squares in 4 ways, for example, as 2124656836 + 11126663289 = 46094^2 + 105483^2 .

It is not a de Polignac number, because 13251320125 - 2²³ = 13242931517 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13251320125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53005156 + ... + 53005405.

It is an arithmetic number, because the mean of its divisors is an integer number (2067205959).

Almost surely, 2^13251320125 is an apocalyptic number.

It is an amenable number.

13251320125 is a deficient number, since it is larger than the sum of its proper divisors (3286327547).

13251320125 is an equidigital number, since it uses as much as digits as its factorization.

13251320125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106010576 (or 106010566 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 13251320125 its reverse (52102315231), we get a palindrome (65353635356).

The spelling of 13251320125 in words is "thirteen billion, two hundred fifty-one million, three hundred twenty thousand, one hundred twenty-five".