7725216 has 24 divisors (see below), whose sum is σ = 20278944. Its totient is φ = 2575040.

The previous prime is 7725199. The next prime is 7725239. The reversal of 7725216 is 6125277.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40140 + ... + 40331.

It is an arithmetic number, because the mean of its divisors is an integer number (844956).

Almost surely, 2^7725216 is an apocalyptic number.

It is an amenable number.

7725216 is an abundant number, since it is smaller than the sum of its proper divisors (12553728).

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

7725216 is a wasteful number, since it uses less digits than its factorization.

7725216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80484 (or 80476 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 7725216 is about 2779.4272791350. The cubic root of 7725216 is about 197.6834038470.

The spelling of 7725216 in words is "seven million, seven hundred twenty-five thousand, two hundred sixteen".