325355520 has 384 divisors, whose sum is σ = 1273708800. Its totient is φ = 69206016.

The previous prime is 325355507. The next prime is 325355531. The reversal of 325355520 is 25553523.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3655636 + ... + 3655724.

It is an arithmetic number, because the mean of its divisors is an integer number (3316950).

Almost surely, 2^325355520 is an apocalyptic number.

325355520 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 325355520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636854400).

325355520 is an abundant number, since it is smaller than the sum of its proper divisors (948353280).

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

325355520 is a wasteful number, since it uses less digits than its factorization.

325355520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 30.

The square root of 325355520 is about 18037.6140329036. The cubic root of 325355520 is about 687.7850419137.

The spelling of 325355520 in words is "three hundred twenty-five million, three hundred fifty-five thousand, five hundred twenty".