320440152225 has 48 divisors (see below), whose sum is σ = 532365926400. Its totient is φ = 170072857920.

The previous prime is 320440152133. The next prime is 320440152233. The reversal of 320440152225 is 522251044023.

It is not a de Polignac number, because 320440152225 - 2¹³ = 320440144033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320440152192 and 320440152201.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31524994 + ... + 31535156.

It is an arithmetic number, because the mean of its divisors is an integer number (11090956800).

Almost surely, 2^320440152225 is an apocalyptic number.

It is an amenable number.

320440152225 is a deficient number, since it is larger than the sum of its proper divisors (211925774175).

320440152225 is a wasteful number, since it uses less digits than its factorization.

320440152225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12174 (or 12169 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 320440152225 its reverse (522251044023), we get a palindrome (842691196248).

The spelling of 320440152225 in words is "three hundred twenty billion, four hundred forty million, one hundred fifty-two thousand, two hundred twenty-five".