7225257 has 12 divisors (see below), whose sum is σ = 10432464. Its totient is φ = 4446000.

The previous prime is 7225241. The next prime is 7225271. The reversal of 7225257 is 7525227.

It is not a de Polignac number, because 7225257 - 2⁴ = 7225241 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 6619 + ... + 7632.

It is an arithmetic number, because the mean of its divisors is an integer number (869372).

Almost surely, 2^7225257 is an apocalyptic number.

It is an amenable number.

7225257 is a deficient number, since it is larger than the sum of its proper divisors (3207207).

7225257 is a wasteful number, since it uses less digits than its factorization.

7225257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14280 (or 14267 counting only the distinct ones).

The product of its digits is 9800, while the sum is 30.

The square root of 7225257 is about 2687.9838169156. The cubic root of 7225257 is about 193.3234038367.

Subtracting from 7225257 its sum of digits (30), we obtain a palindrome (7225227).

The spelling of 7225257 in words is "seven million, two hundred twenty-five thousand, two hundred fifty-seven".