325244155520 has 128 divisors (see below), whose sum is σ = 814368816000. Its totient is φ = 123977125888.

The previous prime is 325244155513. The next prime is 325244155573. The reversal of 325244155520 is 25551442523.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3918611 + ... + 4000749.

It is an arithmetic number, because the mean of its divisors is an integer number (6362256375).

Almost surely, 2^325244155520 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 325244155520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407184408000).

325244155520 is an abundant number, since it is smaller than the sum of its proper divisors (489124660480).

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

325244155520 is a wasteful number, since it uses less digits than its factorization.

325244155520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82450 (or 82438 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 325244155520 in words is "three hundred twenty-five billion, two hundred forty-four million, one hundred fifty-five thousand, five hundred twenty".