328140625 has 14 divisors (see below), whose sum is σ = 410190062. Its totient is φ = 262500000.

The previous prime is 328140599. The next prime is 328140643. The reversal of 328140625 is 526041823.

It can be written as a sum of positive squares in 7 ways, for example, as 317124864 + 11015761 = 17808^2 + 3319^2 .

It is a de Polignac number, because none of the positive numbers 2^k-328140625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5125 + ... + 26125.

Almost surely, 2^328140625 is an apocalyptic number.

It is an amenable number.

328140625 is a deficient number, since it is larger than the sum of its proper divisors (82049437).

328140625 is an frugal number, since it uses more digits than its factorization.

328140625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21031 (or 21006 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 328140625 is about 18114.6522185771. The cubic root of 328140625 is about 689.7419920333.

The spelling of 328140625 in words is "three hundred twenty-eight million, one hundred forty thousand, six hundred twenty-five".