12331321225 has 6 divisors (see below), whose sum is σ = 15290838350. Its totient is φ = 9865056960.

The previous prime is 12331321207. The next prime is 12331321241. The reversal of 12331321225 is 52212313321.

It can be written as a sum of positive squares in 3 ways, for example, as 3211262224 + 9120059001 = 56668^2 + 95499^2 .

It is not a de Polignac number, because 12331321225 - 2⁵ = 12331321193 is a prime.

It is a super-2 number, since 2×12331321225² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 493252849 = 12331321225 / (1 + 2 + 3 + 3 + 1 + 3 + 2 + 1 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 12331321225.

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, 246626400 + ... + 246626449.

Almost surely, 2^12331321225 is an apocalyptic number.

It is an amenable number.

12331321225 is a deficient number, since it is larger than the sum of its proper divisors (2959517125).

12331321225 is an equidigital number, since it uses as much as digits as its factorization.

12331321225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493252859 (or 493252854 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

Adding to 12331321225 its reverse (52212313321), we get a palindrome (64543634546).

The spelling of 12331321225 in words is "twelve billion, three hundred thirty-one million, three hundred twenty-one thousand, two hundred twenty-five".