325605666 has 8 divisors (see below), whose sum is σ = 651211344. Its totient is φ = 108535220.

The previous prime is 325605653. The next prime is 325605667. The reversal of 325605666 is 666506523.

It is a sphenic number, since it is the product of 3 distinct primes.

325605666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (325605667) 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, 27133800 + ... + 27133811.

It is an arithmetic number, because the mean of its divisors is an integer number (81401418).

Almost surely, 2^325605666 is an apocalyptic number.

325605666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

325605666 is a wasteful number, since it uses less digits than its factorization.

325605666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54267616.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 325605666 is about 18044.5467108487. The cubic root of 325605666 is about 687.9612620721.

It can be divided in two parts, 32560 and 5666, that added together give a triangular number (38226 = T₂₇₆).

The spelling of 325605666 in words is "three hundred twenty-five million, six hundred five thousand, six hundred sixty-six".