325122111521 has 4 divisors (see below), whose sum is σ = 325384943892. Its totient is φ = 324859279152.

The previous prime is 325122111511. The next prime is 325122111527. The reversal of 325122111521 is 125111221523.

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

It can be written as a sum of positive squares in 2 ways, for example, as 202580107921 + 122542003600 = 450089^2 + 350060^2 .

It is a cyclic number.

It is not a de Polignac number, because 325122111521 - 2²² = 325117917217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (325122111527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131414330 + ... + 131416803.

It is an arithmetic number, because the mean of its divisors is an integer number (81346235973).

Almost surely, 2^325122111521 is an apocalyptic number.

It is an amenable number.

325122111521 is a deficient number, since it is larger than the sum of its proper divisors (262832371).

325122111521 is a wasteful number, since it uses less digits than its factorization.

325122111521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262832370.

The product of its digits is 1200, while the sum is 26.

The spelling of 325122111521 in words is "three hundred twenty-five billion, one hundred twenty-two million, one hundred eleven thousand, five hundred twenty-one".