325305520 has 80 divisors (see below), whose sum is σ = 781905312. Its totient is φ = 125798400.

The previous prime is 325305511. The next prime is 325305559. The reversal of 325305520 is 25503523.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308995 + ... + 310045.

Almost surely, 2^325305520 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 325305520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390952656).

325305520 is an abundant number, since it is smaller than the sum of its proper divisors (456599792).

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

325305520 is a wasteful number, since it uses less digits than its factorization.

325305520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190 (or 1184 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 325305520 is about 18036.2279870266. The cubic root of 325305520 is about 687.7498076220.

The spelling of 325305520 in words is "three hundred twenty-five million, three hundred five thousand, five hundred twenty".