7656225 has 48 divisors (see below), whose sum is σ = 13570560. Its totient is φ = 3801600.

The previous prime is 7656211. The next prime is 7656247. The reversal of 7656225 is 5226567.

It is not a de Polignac number, because 7656225 - 2⁶ = 7656161 is a prime.

7656225 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 85981 + ... + 86069.

It is an arithmetic number, because the mean of its divisors is an integer number (282720).

Almost surely, 2^7656225 is an apocalyptic number.

7656225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7656225 is a deficient number, since it is larger than the sum of its proper divisors (5914335).

7656225 is a wasteful number, since it uses less digits than its factorization.

7656225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 165 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 7656225 is about 2766.9884351041. The cubic root of 7656225 is about 197.0931645540.

The spelling of 7656225 in words is "seven million, six hundred fifty-six thousand, two hundred twenty-five".