325072720 has 40 divisors (see below), whose sum is σ = 863766144. Its totient is φ = 111453312.

The previous prime is 325072717. The next prime is 325072751. The reversal of 325072720 is 27270523.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289684 + ... + 290803.

Almost surely, 2^325072720 is an apocalyptic number.

It is an amenable number.

325072720 is an abundant number, since it is smaller than the sum of its proper divisors (538693424).

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

325072720 is a wasteful number, since it uses less digits than its factorization.

325072720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580507 (or 580501 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 325072720 is about 18029.7731544243. The cubic root of 325072720 is about 687.5857092042.

The spelling of 325072720 in words is "three hundred twenty-five million, seventy-two thousand, seven hundred twenty".