1313218238825 has 6 divisors (see below), whose sum is σ = 1628390616174. Its totient is φ = 1050574591040.

The previous prime is 1313218238797. The next prime is 1313218238837. The reversal of 1313218238825 is 5288328123131.

It can be written as a sum of positive squares in 3 ways, for example, as 217695963241 + 1095522275584 = 466579^2 + 1046672^2 .

It is not a de Polignac number, because 1313218238825 - 2¹² = 1313218234729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313218238825.

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, 26264364752 + ... + 26264364801.

It is an arithmetic number, because the mean of its divisors is an integer number (271398436029).

Almost surely, 2^{1313218238825} is an apocalyptic number.

It is an amenable number.

1313218238825 is a deficient number, since it is larger than the sum of its proper divisors (315172377349).

1313218238825 is an equidigital number, since it uses as much as digits as its factorization.

1313218238825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52528729563 (or 52528729558 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The spelling of 1313218238825 in words is "one trillion, three hundred thirteen billion, two hundred eighteen million, two hundred thirty-eight thousand, eight hundred twenty-five".