320252431225 has 6 divisors (see below), whose sum is σ = 397113014750. Its totient is φ = 256201944960.

The previous prime is 320252431217. The next prime is 320252431361. The reversal of 320252431225 is 522134252023.

It can be written as a sum of positive squares in 3 ways, for example, as 6843921984 + 313408509241 = 82728^2 + 559829^2 .

It is not a de Polignac number, because 320252431225 - 2³ = 320252431217 is a prime.

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, 6405048600 + ... + 6405048649.

Almost surely, 2^320252431225 is an apocalyptic number.

It is an amenable number.

320252431225 is a deficient number, since it is larger than the sum of its proper divisors (76860583525).

320252431225 is a wasteful number, since it uses less digits than its factorization.

320252431225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12810097259 (or 12810097254 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 320252431225 its reverse (522134252023), we get a palindrome (842386683248).

The spelling of 320252431225 in words is "three hundred twenty billion, two hundred fifty-two million, four hundred thirty-one thousand, two hundred twenty-five".