325330661 has 4 divisors (see below), whose sum is σ = 330844800. Its totient is φ = 319816524.

The previous prime is 325330657. The next prime is 325330669. The reversal of 325330661 is 166033523.

It is a happy number.

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: 166033523 = 277 ⋅599399.

It is a cyclic number.

It is not a de Polignac number, because 325330661 - 2² = 325330657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325330669) 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, 2756981 + ... + 2757098.

It is an arithmetic number, because the mean of its divisors is an integer number (82711200).

Almost surely, 2^325330661 is an apocalyptic number.

It is an amenable number.

325330661 is a deficient number, since it is larger than the sum of its proper divisors (5514139).

325330661 is an equidigital number, since it uses as much as digits as its factorization.

325330661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514138.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 325330661 is about 18036.9249319278. The cubic root of 325330661 is about 687.7675245798.

The spelling of 325330661 in words is "three hundred twenty-five million, three hundred thirty thousand, six hundred sixty-one".