7225816 has 64 divisors (see below), whose sum is σ = 15936480. Its totient is φ = 3041280.

The previous prime is 7225811. The next prime is 7225819. The reversal of 7225816 is 6185227.

Its product of digits (6720) is a multiple of the sum of its prime divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7225811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107815 + ... + 107881.

Almost surely, 2^7225816 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 7225816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7968240).

7225816 is an abundant number, since it is smaller than the sum of its proper divisors (8710664).

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

7225816 is a wasteful number, since it uses less digits than its factorization.

7225816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 160 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 7225816 is about 2688.0877961852. The cubic root of 7225816 is about 193.3283893570.

The spelling of 7225816 in words is "seven million, two hundred twenty-five thousand, eight hundred sixteen".