328171225 has 6 divisors (see below), whose sum is σ = 406932350. Its totient is φ = 262536960.

The previous prime is 328171223. The next prime is 328171237. The reversal of 328171225 is 522171823.

It can be written as a sum of positive squares in 3 ways, for example, as 2152089 + 326019136 = 1467^2 + 18056^2 .

It is not a de Polignac number, because 328171225 - 2¹ = 328171223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328171223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6563400 + ... + 6563449.

Almost surely, 2^328171225 is an apocalyptic number.

It is an amenable number.

328171225 is a deficient number, since it is larger than the sum of its proper divisors (78761125).

328171225 is a wasteful number, since it uses less digits than its factorization.

328171225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13126859 (or 13126854 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 328171225 is about 18115.4968190221. The cubic root of 328171225 is about 689.7634314684.

The spelling of 328171225 in words is "three hundred twenty-eight million, one hundred seventy-one thousand, two hundred twenty-five".