13125323251 has 4 divisors (see below), whose sum is σ = 13161884400. Its totient is φ = 13088762104.

The previous prime is 13125323243. The next prime is 13125323273. The reversal of 13125323251 is 15232352131.

13125323251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13125323251 - 2³ = 13125323243 is a prime.

It is a super-2 number, since 2×13125323251² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13125323051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18280036 + ... + 18280753.

It is an arithmetic number, because the mean of its divisors is an integer number (3290471100).

Almost surely, 2^13125323251 is an apocalyptic number.

13125323251 is a deficient number, since it is larger than the sum of its proper divisors (36561149).

13125323251 is an equidigital number, since it uses as much as digits as its factorization.

13125323251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36561148.

The product of its digits is 5400, while the sum is 28.

Adding to 13125323251 its reverse (15232352131), we get a palindrome (28357675382).

The spelling of 13125323251 in words is "thirteen billion, one hundred twenty-five million, three hundred twenty-three thousand, two hundred fifty-one".