325921690 has 16 divisors (see below), whose sum is σ = 588264192. Its totient is φ = 130011984.

The previous prime is 325921667. The next prime is 325921697. The reversal of 325921690 is 96129523.

It is a super-2 number, since 2×325921690² = 212449896024912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (325921697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40734 + ... + 48073.

It is an arithmetic number, because the mean of its divisors is an integer number (36766512).

Almost surely, 2^325921690 is an apocalyptic number.

325921690 is a deficient number, since it is larger than the sum of its proper divisors (262342502).

325921690 is a wasteful number, since it uses less digits than its factorization.

325921690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89181.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 325921690 is about 18053.3013601391. The cubic root of 325921690 is about 688.1837622641.

The spelling of 325921690 in words is "three hundred twenty-five million, nine hundred twenty-one thousand, six hundred ninety".