320042225 has 6 divisors (see below), whose sum is σ = 396852390. Its totient is φ = 256033760.

The previous prime is 320042179. The next prime is 320042257. The reversal of 320042225 is 522240023.

It can be written as a sum of positive squares in 3 ways, for example, as 23892544 + 296149681 = 4888^2 + 17209^2 .

It is not a de Polignac number, because 320042225 - 2¹² = 320038129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320042197 and 320042206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6400820 + ... + 6400869.

It is an arithmetic number, because the mean of its divisors is an integer number (66142065).

Almost surely, 2^320042225 is an apocalyptic number.

It is an amenable number.

320042225 is a deficient number, since it is larger than the sum of its proper divisors (76810165).

320042225 is a wasteful number, since it uses less digits than its factorization.

320042225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12801699 (or 12801694 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 320042225 is about 17889.7240056967. The cubic root of 320042225 is about 684.0204622368.

Adding to 320042225 its reverse (522240023), we get a palindrome (842282248).

The spelling of 320042225 in words is "three hundred twenty million, forty-two thousand, two hundred twenty-five".