325985220 has 144 divisors (see below), whose sum is σ = 1096804800. Its totient is φ = 77702400.

The previous prime is 325985203. The next prime is 325985249. The reversal of 325985220 is 22589523.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119431 + ... + 122129.

It is an arithmetic number, because the mean of its divisors is an integer number (7616700).

Almost surely, 2^325985220 is an apocalyptic number.

325985220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325985220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548402400).

325985220 is an abundant number, since it is smaller than the sum of its proper divisors (770819580).

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

325985220 is a wasteful number, since it uses less digits than its factorization.

325985220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786 (or 2781 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 325985220 is about 18055.0607863834. The cubic root of 325985220 is about 688.2284738982.

The spelling of 325985220 in words is "three hundred twenty-five million, nine hundred eighty-five thousand, two hundred twenty".