325971220 has 48 divisors (see below), whose sum is σ = 727392960. Its totient is φ = 122356224.

The previous prime is 325971211. The next prime is 325971227. The reversal of 325971220 is 22179523.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325971227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36652 + ... + 44668.

It is an arithmetic number, because the mean of its divisors is an integer number (15154020).

Almost surely, 2^325971220 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 325971220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363696480).

325971220 is an abundant number, since it is smaller than the sum of its proper divisors (401421740).

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

325971220 is a wasteful number, since it uses less digits than its factorization.

325971220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8152 (or 8150 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 325971220 is about 18054.6730792889. The cubic root of 325971220 is about 688.2186213691.

The spelling of 325971220 in words is "three hundred twenty-five million, nine hundred seventy-one thousand, two hundred twenty".