328621295025 has 45 divisors (see below), whose sum is σ = 608768023611. Its totient is φ = 175250932560.

The previous prime is 328621294999. The next prime is 328621295033. The reversal of 328621295025 is 520592126823.

The square root of 328621295025 is 573255.

It is a perfect power (a square), and thus also a powerful number.

328621295025 is a `hidden beast` number, since 328 + 6 + 212 + 95 + 0 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 118303666209 + 210317628816 = 343953^2 + 458604^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 328621295025 - 2¹¹ = 328621292977 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 25790106 + ... + 25802844.

Almost surely, 2^328621295025 is an apocalyptic number.

328621295025 is the 573255-th square number.

328621295025 is the 286628-th centered octagonal number.

It is an amenable number.

328621295025 is a deficient number, since it is larger than the sum of its proper divisors (280146728586).

328621295025 is an frugal number, since it uses more digits than its factorization.

328621295025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25500 (or 12747 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 328621295025 in words is "three hundred twenty-eight billion, six hundred twenty-one million, two hundred ninety-five thousand, twenty-five".