13225216 has 36 divisors (see below), whose sum is σ = 27798400. Its totient is φ = 6262272.

The previous prime is 13225213. The next prime is 13225217. The reversal of 13225216 is 61252231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13225213) 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, 3505 + ... + 6223.

Almost surely, 2^13225216 is an apocalyptic number.

13225216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13225216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13899200).

13225216 is an abundant number, since it is smaller than the sum of its proper divisors (14573184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13225216 is an equidigital number, since it uses as much as digits as its factorization.

13225216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754 (or 2740 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 13225216 is about 3636.6490069843. The cubic root of 13225216 is about 236.4835436793.

Adding to 13225216 its reverse (61252231), we get a palindrome (74477447).

The spelling of 13225216 in words is "thirteen million, two hundred twenty-five thousand, two hundred sixteen".