13225318 has 4 divisors (see below), whose sum is σ = 19837980. Its totient is φ = 6612658.

The previous prime is 13225301. The next prime is 13225343. The reversal of 13225318 is 81352231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81352231 = 809 ⋅100559.

It is a super-2 number, since 2×13225318² = 349818072402248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13225292 and 13225301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3306328 + ... + 3306331.

It is an arithmetic number, because the mean of its divisors is an integer number (4959495).

Almost surely, 2^13225318 is an apocalyptic number.

13225318 is a deficient number, since it is larger than the sum of its proper divisors (6612662).

13225318 is an equidigital number, since it uses as much as digits as its factorization.

13225318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612661.

The product of its digits is 1440, while the sum is 25.

The square root of 13225318 is about 3636.6630308567. The cubic root of 13225318 is about 236.4841516406.

Adding to 13225318 its reverse (81352231), we get a palindrome (94577549).

The spelling of 13225318 in words is "thirteen million, two hundred twenty-five thousand, three hundred eighteen".