1312304225 has 6 divisors (see below), whose sum is σ = 1627257270. Its totient is φ = 1049843360.

The previous prime is 1312304207. The next prime is 1312304233. The reversal of 1312304225 is 5224032131.

It can be written as a sum of positive squares in 3 ways, for example, as 19254544 + 1293049681 = 4388^2 + 35959^2 .

It is not a de Polignac number, because 1312304225 - 2¹⁴ = 1312287841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312304225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26246060 + ... + 26246109.

It is an arithmetic number, because the mean of its divisors is an integer number (271209545).

Almost surely, 2^1312304225 is an apocalyptic number.

It is an amenable number.

1312304225 is a deficient number, since it is larger than the sum of its proper divisors (314953045).

1312304225 is an equidigital number, since it uses as much as digits as its factorization.

1312304225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52492179 (or 52492174 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1312304225 is about 36225.7398130114. The cubic root of 1312304225 is about 1094.8253441470.

Adding to 1312304225 its reverse (5224032131), we get a palindrome (6536336356).

The spelling of 1312304225 in words is "one billion, three hundred twelve million, three hundred four thousand, two hundred twenty-five".