325485520 has 20 divisors (see below), whose sum is σ = 756754020. Its totient is φ = 130194176.

The previous prime is 325485509. The next prime is 325485521. The reversal of 325485520 is 25584523.

It can be written as a sum of positive squares in 2 ways, for example, as 103713856 + 221771664 = 10184^2 + 14892^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325485521) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2034205 + ... + 2034364.

It is an arithmetic number, because the mean of its divisors is an integer number (37837701).

Almost surely, 2^325485520 is an apocalyptic number.

It is an amenable number.

325485520 is an abundant number, since it is smaller than the sum of its proper divisors (431268500).

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

325485520 is a wasteful number, since it uses less digits than its factorization.

325485520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068582 (or 4068576 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 325485520 is about 18041.2172538330. The cubic root of 325485520 is about 687.8766341812.

The spelling of 325485520 in words is "three hundred twenty-five million, four hundred eighty-five thousand, five hundred twenty".