7225636 has 18 divisors (see below), whose sum is σ = 13899830. Its totient is φ = 3284160.

The previous prime is 7225607. The next prime is 7225651. The reversal of 7225636 is 6365227.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 256036 = 2640^2 + 506^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7225598 and 7225607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6981 + ... + 7948.

Almost surely, 2^7225636 is an apocalyptic number.

It is an amenable number.

7225636 is a deficient number, since it is larger than the sum of its proper divisors (6674194).

7225636 is a wasteful number, since it uses less digits than its factorization.

7225636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14955 (or 14942 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 7225636 is about 2688.0543149274. The cubic root of 7225636 is about 193.3267840297.

The spelling of 7225636 in words is "seven million, two hundred twenty-five thousand, six hundred thirty-six".