325665320 has 64 divisors (see below), whose sum is σ = 774100800. Its totient is φ = 123306048.

The previous prime is 325665313. The next prime is 325665341. The reversal of 325665320 is 23566523.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273767 + ... + 274953.

It is an arithmetic number, because the mean of its divisors is an integer number (12095325).

Almost surely, 2^325665320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325665320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387050400).

325665320 is an abundant number, since it is smaller than the sum of its proper divisors (448435480).

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

325665320 is a wasteful number, since it uses less digits than its factorization.

325665320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255 (or 1213 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 325665320 is about 18046.1995999158. The cubic root of 325665320 is about 688.0032731501.

The spelling of 325665320 in words is "three hundred twenty-five million, six hundred sixty-five thousand, three hundred twenty".