320201825 has 12 divisors (see below), whose sum is σ = 397280748. Its totient is φ = 256012800.

The previous prime is 320201809. The next prime is 320201867. The reversal of 320201825 is 528102023.

It can be written as a sum of positive squares in 6 ways, for example, as 14371681 + 305830144 = 3791^2 + 17488^2 .

It is not a de Polignac number, because 320201825 - 2⁴ = 320201809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320201825.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65465 + ... + 70185.

It is an arithmetic number, because the mean of its divisors is an integer number (33106729).

Almost surely, 2^320201825 is an apocalyptic number.

It is an amenable number.

320201825 is a deficient number, since it is larger than the sum of its proper divisors (77078923).

320201825 is a wasteful number, since it uses less digits than its factorization.

320201825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7444 (or 7439 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 320201825 is about 17894.1841110457. The cubic root of 320201825 is about 684.1341467397.

Adding to 320201825 its reverse (528102023), we get a palindrome (848303848).

The spelling of 320201825 in words is "three hundred twenty million, two hundred one thousand, eight hundred twenty-five".