328613825 has 12 divisors (see below), whose sum is σ = 431451180. Its totient is φ = 247426560.

The previous prime is 328613777. The next prime is 328613827. The reversal of 328613825 is 528316823.

It can be written as a sum of positive squares in 6 ways, for example, as 40157569 + 288456256 = 6337^2 + 16984^2 .

It is not a de Polignac number, because 328613825 - 2¹⁴ = 328597441 is a prime.

It is a super-2 number, since 2×328613825² = 215974091962261250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (328613827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386180 + ... + 387029.

It is an arithmetic number, because the mean of its divisors is an integer number (35954265).

Almost surely, 2^328613825 is an apocalyptic number.

It is an amenable number.

328613825 is a deficient number, since it is larger than the sum of its proper divisors (102837355).

328613825 is a wasteful number, since it uses less digits than its factorization.

328613825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773236 (or 773231 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 328613825 is about 18127.7087631063. The cubic root of 328613825 is about 690.0733836395.

The spelling of 328613825 in words is "three hundred twenty-eight million, six hundred thirteen thousand, eight hundred twenty-five".