13568755225 has 9 divisors (see below), whose sum is σ = 16825978717. Its totient is φ = 10854538240.

The previous prime is 13568755169. The next prime is 13568755229. The reversal of 13568755225 is 52255786531.

The square root of 13568755225 is 116485.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4345841929 + 9222913296 = 65923^2 + 96036^2 .

It is not a de Polignac number, because 13568755225 - 2⁹ = 13568754713 is a prime.

It is a super-2 number, since 2×13568755225² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13568755229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 570777 + ... + 594073.

Almost surely, 2^13568755225 is an apocalyptic number.

13568755225 is the 116485-th square number.

13568755225 is the 58243-rd centered octagonal number.

It is an amenable number.

13568755225 is a deficient number, since it is larger than the sum of its proper divisors (3257223492).

13568755225 is an frugal number, since it uses more digits than its factorization.

13568755225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46604 (or 23302 counting only the distinct ones).

The product of its digits is 2520000, while the sum is 49.

Multiplying 13568755225 by its sum of digits (49), we get a square (664869006025 = 815395²).

The spelling of 13568755225 in words is "thirteen billion, five hundred sixty-eight million, seven hundred fifty-five thousand, two hundred twenty-five".