325823921 has 4 divisors (see below), whose sum is σ = 344990052. Its totient is φ = 306657792.

The previous prime is 325823909. The next prime is 325823959. The reversal of 325823921 is 129328523.

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 107848225 + 217975696 = 10385^2 + 14764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325823921 is a prime.

It is a super-2 number, since 2×325823921² = 212322454991628482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (325823521) 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, 9583040 + ... + 9583073.

It is an arithmetic number, because the mean of its divisors is an integer number (86247513).

Almost surely, 2^325823921 is an apocalyptic number.

It is an amenable number.

325823921 is a deficient number, since it is larger than the sum of its proper divisors (19166131).

325823921 is a wasteful number, since it uses less digits than its factorization.

325823921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19166130.

The product of its digits is 25920, while the sum is 35.

The square root of 325823921 is about 18050.5933697483. The cubic root of 325823921 is about 688.1149422897.

The spelling of 325823921 in words is "three hundred twenty-five million, eight hundred twenty-three thousand, nine hundred twenty-one".