320135334025 has 72 divisors (see below), whose sum is σ = 444178739144. Its totient is φ = 227366092800.

The previous prime is 320135333983. The next prime is 320135334037. The reversal of 320135334025 is 520433531023.

It can be written as a sum of positive squares in 36 ways, for example, as 317975315449 + 2160018576 = 563893^2 + 46476^2 .

It is not a de Polignac number, because 320135334025 - 2²⁵ = 320101779593 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 95248345 + ... + 95251705.

Almost surely, 2^320135334025 is an apocalyptic number.

It is an amenable number.

320135334025 is a deficient number, since it is larger than the sum of its proper divisors (124043405119).

320135334025 is a wasteful number, since it uses less digits than its factorization.

320135334025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599 (or 3505 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 320135334025 its reverse (520433531023), we get a palindrome (840568865048).

The spelling of 320135334025 in words is "three hundred twenty billion, one hundred thirty-five million, three hundred thirty-four thousand, twenty-five".