1213353325 has 24 divisors (see below), whose sum is σ = 1600029288. Its totient is φ = 909588480.

The previous prime is 1213353313. The next prime is 1213353341. The reversal of 1213353325 is 5233533121.

It can be written as a sum of positive squares in 12 ways, for example, as 333756361 + 879596964 = 18269^2 + 29658^2 .

It is not a de Polignac number, because 1213353325 - 2⁹ = 1213352813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213353293 and 1213353302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92899 + ... + 105151.

It is an arithmetic number, because the mean of its divisors is an integer number (66667887).

Almost surely, 2^1213353325 is an apocalyptic number.

It is an amenable number.

1213353325 is a deficient number, since it is larger than the sum of its proper divisors (386675963).

1213353325 is a wasteful number, since it uses less digits than its factorization.

1213353325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12513 (or 12508 counting only the distinct ones).

The product of its digits is 8100, while the sum is 28.

The square root of 1213353325 is about 34833.2215707936. The cubic root of 1213353325 is about 1066.5857119008.

Adding to 1213353325 its reverse (5233533121), we get a palindrome (6446886446).

The spelling of 1213353325 in words is "one billion, two hundred thirteen million, three hundred fifty-three thousand, three hundred twenty-five".