13223225513 has 4 divisors (see below), whose sum is σ = 13472720388. Its totient is φ = 12973730640.

The previous prime is 13223225507. The next prime is 13223225557. The reversal of 13223225513 is 31552232231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11970985744 + 1252239769 = 109412^2 + 35387^2 .

It is a cyclic number.

It is not a de Polignac number, because 13223225513 - 2¹⁰ = 13223224489 is a prime.

It is a super-2 number, since 2×13223225513² (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 (13223225563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124747358 + ... + 124747463.

It is an arithmetic number, because the mean of its divisors is an integer number (3368180097).

Almost surely, 2^13223225513 is an apocalyptic number.

It is an amenable number.

13223225513 is a deficient number, since it is larger than the sum of its proper divisors (249494875).

13223225513 is an equidigital number, since it uses as much as digits as its factorization.

13223225513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249494874.

The product of its digits is 10800, while the sum is 29.

Adding to 13223225513 its reverse (31552232231), we get a palindrome (44775457744).

The spelling of 13223225513 in words is "thirteen billion, two hundred twenty-three million, two hundred twenty-five thousand, five hundred thirteen".