328931460225 has 60 divisors (see below), whose sum is σ = 645135705324. Its totient is φ = 165110676480.

The previous prime is 328931460161. The next prime is 328931460287. The reversal of 328931460225 is 522064139823.

328931460225 is a `hidden beast` number, since 3 + 2 + 8 + 9 + 3 + 14 + 602 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 423659889 + 328507800336 = 20583^2 + 573156^2 .

It is not a de Polignac number, because 328931460225 - 2⁶ = 328931460161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4743084 + ... + 4811933.

Almost surely, 2^328931460225 is an apocalyptic number.

It is an amenable number.

328931460225 is a deficient number, since it is larger than the sum of its proper divisors (316204245099).

328931460225 is a wasteful number, since it uses less digits than its factorization.

328931460225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9555056 (or 9555042 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 328931460225 in words is "three hundred twenty-eight billion, nine hundred thirty-one million, four hundred sixty thousand, two hundred twenty-five".