328971425 has 6 divisors (see below), whose sum is σ = 407924598. Its totient is φ = 263177120.

The previous prime is 328971421. The next prime is 328971427. The reversal of 328971425 is 524179823.

It can be written as a sum of positive squares in 3 ways, for example, as 1216609 + 327754816 = 1103^2 + 18104^2 .

It is not a de Polignac number, because 328971425 - 2² = 328971421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328971421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6579404 + ... + 6579453.

It is an arithmetic number, because the mean of its divisors is an integer number (67987433).

Almost surely, 2^328971425 is an apocalyptic number.

It is an amenable number.

328971425 is a deficient number, since it is larger than the sum of its proper divisors (78953173).

328971425 is a wasteful number, since it uses less digits than its factorization.

328971425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13158867 (or 13158862 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 328971425 is about 18137.5694347396. The cubic root of 328971425 is about 690.3236072200.

The spelling of 328971425 in words is "three hundred twenty-eight million, nine hundred seventy-one thousand, four hundred twenty-five".