325821973 has 4 divisors (see below), whose sum is σ = 326203020. Its totient is φ = 325440928.

The previous prime is 325821967. The next prime is 325822009. The reversal of 325821973 is 379128523.

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 202123089 + 123698884 = 14217^2 + 11122^2 .

It is a cyclic number.

It is not a de Polignac number, because 325821973 - 2⁵ = 325821941 is a prime.

It is a super-2 number, since 2×325821973² = 212319916179225458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325821073) 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, 189238 + ... + 190951.

It is an arithmetic number, because the mean of its divisors is an integer number (81550755).

Almost surely, 2^325821973 is an apocalyptic number.

It is an amenable number.

325821973 is a deficient number, since it is larger than the sum of its proper divisors (381047).

325821973 is an equidigital number, since it uses as much as digits as its factorization.

325821973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381046.

The product of its digits is 90720, while the sum is 40.

The square root of 325821973 is about 18050.5394102226. The cubic root of 325821973 is about 688.1135709451.

The spelling of 325821973 in words is "three hundred twenty-five million, eight hundred twenty-one thousand, nine hundred seventy-three".