7225216 has 32 divisors (see below), whose sum is σ = 14712480. Its totient is φ = 3532800.

The previous prime is 7225193. The next prime is 7225217. The reversal of 7225216 is 6125227.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7225217) 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, 5416 + ... + 6616.

It is an arithmetic number, because the mean of its divisors is an integer number (459765).

Almost surely, 2^7225216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7225216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7356240).

7225216 is an abundant number, since it is smaller than the sum of its proper divisors (7487264).

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

7225216 is a wasteful number, since it uses less digits than its factorization.

7225216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262 (or 1250 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 7225216 is about 2687.9761903707. The cubic root of 7225216 is about 193.3230381623.

The spelling of 7225216 in words is "seven million, two hundred twenty-five thousand, two hundred sixteen".