325806491 has 4 divisors (see below), whose sum is σ = 332738592. Its totient is φ = 318874392.

The previous prime is 325806469. The next prime is 325806493. The reversal of 325806491 is 194608523.

It is a happy number.

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 325806491 - 2²⁶ = 258697627 is a prime.

It is a super-2 number, since 2×325806491² = 212299739155466162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (325806493) 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, 3465980 + ... + 3466073.

It is an arithmetic number, because the mean of its divisors is an integer number (83184648).

Almost surely, 2^325806491 is an apocalyptic number.

325806491 is a deficient number, since it is larger than the sum of its proper divisors (6932101).

325806491 is an equidigital number, since it uses as much as digits as its factorization.

325806491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6932100.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 325806491 is about 18050.1105536781. The cubic root of 325806491 is about 688.1026717998.

The spelling of 325806491 in words is "three hundred twenty-five million, eight hundred six thousand, four hundred ninety-one".