328864225 has 6 divisors (see below), whose sum is σ = 407791670. Its totient is φ = 263091360.

The previous prime is 328864223. The next prime is 328864229. The reversal of 328864225 is 522468823.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2808976 + 326055249 = 1676^2 + 18057^2 .

It is not a de Polignac number, because 328864225 - 2¹ = 328864223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328864223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6577260 + ... + 6577309.

Almost surely, 2^328864225 is an apocalyptic number.

It is an amenable number.

328864225 is a deficient number, since it is larger than the sum of its proper divisors (78927445).

328864225 is a wasteful number, since it uses less digits than its factorization.

328864225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13154579 (or 13154574 counting only the distinct ones).

The product of its digits is 184320, while the sum is 40.

The square root of 328864225 is about 18134.6140019577. The cubic root of 328864225 is about 690.2486151642.

The spelling of 328864225 in words is "three hundred twenty-eight million, eight hundred sixty-four thousand, two hundred twenty-five".