325749233921 has 4 divisors (see below), whose sum is σ = 325752413952. Its totient is φ = 325746053892.

The previous prime is 325749233911. The next prime is 325749233951. The reversal of 325749233921 is 129332947523.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 129332947523 = 13 ⋅9948688271.

It is a cyclic number.

It is not a de Polignac number, because 325749233921 - 2¹⁴ = 325749217537 is a prime.

It is a super-2 number, since 2×325749233921² (a number of 24 digits) contains 22 as substring.

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 325749233921.

It is not an unprimeable number, because it can be changed into a prime (325749233911) 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, 1431065 + ... + 1642998.

It is an arithmetic number, because the mean of its divisors is an integer number (81438103488).

Almost surely, 2^325749233921 is an apocalyptic number.

It is an amenable number.

325749233921 is a deficient number, since it is larger than the sum of its proper divisors (3180031).

325749233921 is a wasteful number, since it uses less digits than its factorization.

325749233921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180030.

The product of its digits is 2449440, while the sum is 50.

The spelling of 325749233921 in words is "three hundred twenty-five billion, seven hundred forty-nine million, two hundred thirty-three thousand, nine hundred twenty-one".