320240005325 has 12 divisors (see below), whose sum is σ = 397611340308. Its totient is φ = 255860563200.

The previous prime is 320240005297. The next prime is 320240005367. The reversal of 320240005325 is 523500042023.

It can be written as a sum of positive squares in 6 ways, for example, as 9435985321 + 310804020004 = 97139^2 + 557498^2 .

It is a de Polignac number, because none of the positive numbers 2^k-320240005325 is a prime.

It is a super-2 number, since 2×320240005325² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320240005294 and 320240005303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8266316 + ... + 8304965.

It is an arithmetic number, because the mean of its divisors is an integer number (33134278359).

Almost surely, 2^320240005325 is an apocalyptic number.

It is an amenable number.

320240005325 is a deficient number, since it is larger than the sum of its proper divisors (77371334983).

320240005325 is a wasteful number, since it uses less digits than its factorization.

320240005325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16572064 (or 16572059 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

Adding to 320240005325 its reverse (523500042023), we get a palindrome (843740047348).

The spelling of 320240005325 in words is "three hundred twenty billion, two hundred forty million, five thousand, three hundred twenty-five".