12312322225 has 24 divisors (see below), whose sum is σ = 17854105280. Its totient is φ = 8246387520.

The previous prime is 12312322207. The next prime is 12312322249. The reversal of 12312322225 is 52222321321.

It is not a de Polignac number, because 12312322225 - 2¹⁹ = 12311797937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 12312322225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 810570 + ... + 825619.

Almost surely, 2^12312322225 is an apocalyptic number.

It is an amenable number.

12312322225 is a deficient number, since it is larger than the sum of its proper divisors (5541783055).

12312322225 is a wasteful number, since it uses less digits than its factorization.

12312322225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636249 (or 1636244 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

Adding to 12312322225 its reverse (52222321321), we get a palindrome (64534643546).

The spelling of 12312322225 in words is "twelve billion, three hundred twelve million, three hundred twenty-two thousand, two hundred twenty-five".