13444320205325 has 6 divisors (see below), whose sum is σ = 16670957054634. Its totient is φ = 10755456164240.

The previous prime is 13444320205307. The next prime is 13444320205331. The reversal of 13444320205325 is 52350202344431.

It can be written as a sum of positive squares in 3 ways, for example, as 2509116192361 + 10935204012964 = 1584019^2 + 3306842^2 .

It is not a de Polignac number, because 13444320205325 - 2³⁸ = 13169442298381 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 268886404082 + ... + 268886404131.

It is an arithmetic number, because the mean of its divisors is an integer number (2778492842439).

Almost surely, 2^{13444320205325} is an apocalyptic number.

It is an amenable number.

13444320205325 is a deficient number, since it is larger than the sum of its proper divisors (3226636849309).

13444320205325 is an equidigital number, since it uses as much as digits as its factorization.

13444320205325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537772808223 (or 537772808218 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 13444320205325 its reverse (52350202344431), we get a palindrome (65794522549756).

The spelling of 13444320205325 in words is "thirteen trillion, four hundred forty-four billion, three hundred twenty million, two hundred five thousand, three hundred twenty-five".