1313224321225 has 6 divisors (see below), whose sum is σ = 1628398158350. Its totient is φ = 1050579456960.

The previous prime is 1313224321223. The next prime is 1313224321231. The reversal of 1313224321225 is 5221234223131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 21612528144 + 1291611793081 = 147012^2 + 1136491^2 .

It is not a de Polignac number, because 1313224321225 - 2¹ = 1313224321223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313224321223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26264486400 + ... + 26264486449.

Almost surely, 2^{1313224321225} is an apocalyptic number.

It is an amenable number.

1313224321225 is a deficient number, since it is larger than the sum of its proper divisors (315173837125).

1313224321225 is an equidigital number, since it uses as much as digits as its factorization.

1313224321225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52528972859 (or 52528972854 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

Adding to 1313224321225 its reverse (5221234223131), we get a palindrome (6534458544356).

The spelling of 1313224321225 in words is "one trillion, three hundred thirteen billion, two hundred twenty-four million, three hundred twenty-one thousand, two hundred twenty-five".