325225728 has 54 divisors (see below), whose sum is σ = 937712594. Its totient is φ = 108407808.

The previous prime is 325225723. The next prime is 325225729. The reversal of 325225728 is 827522523.

It is a happy number.

325225728 is a `hidden beast` number, since 32 + 52 + 2 + 572 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 283855104 + 41370624 = 16848^2 + 6432^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 325225692 and 325225701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325225723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68275 + ... + 72882.

Almost surely, 2^325225728 is an apocalyptic number.

It is an amenable number.

325225728 is an abundant number, since it is smaller than the sum of its proper divisors (612486866).

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

325225728 is a wasteful number, since it uses less digits than its factorization.

325225728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141179 (or 141162 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 325225728 is about 18034.0158589262. The cubic root of 325225728 is about 687.6935718511.

The spelling of 325225728 in words is "three hundred twenty-five million, two hundred twenty-five thousand, seven hundred twenty-eight".