320140355225 has 6 divisors (see below), whose sum is σ = 396974040510. Its totient is φ = 256112284160.

The previous prime is 320140355209. The next prime is 320140355261. The reversal of 320140355225 is 522553041023.

It can be written as a sum of positive squares in 3 ways, for example, as 31324398169 + 288815957056 = 176987^2 + 537416^2 .

It is not a de Polignac number, because 320140355225 - 2⁴ = 320140355209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320140355191 and 320140355200.

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, 6402807080 + ... + 6402807129.

It is an arithmetic number, because the mean of its divisors is an integer number (66162340085).

Almost surely, 2^320140355225 is an apocalyptic number.

It is an amenable number.

320140355225 is a deficient number, since it is larger than the sum of its proper divisors (76833685285).

320140355225 is a wasteful number, since it uses less digits than its factorization.

320140355225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12805614219 (or 12805614214 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 320140355225 its reverse (522553041023), we get a palindrome (842693396248).

The spelling of 320140355225 in words is "three hundred twenty billion, one hundred forty million, three hundred fifty-five thousand, two hundred twenty-five".