7256225 has 6 divisors (see below), whose sum is σ = 8997750. Its totient is φ = 5804960.

The previous prime is 7256213. The next prime is 7256251. The reversal of 7256225 is 5226527.

It can be written as a sum of positive squares in 3 ways, for example, as 1577536 + 5678689 = 1256^2 + 2383^2 .

It is not a de Polignac number, because 7256225 - 2⁴ = 7256209 is a prime.

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, 145100 + ... + 145149.

It is an arithmetic number, because the mean of its divisors is an integer number (1499625).

Almost surely, 2^7256225 is an apocalyptic number.

It is an amenable number.

7256225 is a deficient number, since it is larger than the sum of its proper divisors (1741525).

7256225 is a wasteful number, since it uses less digits than its factorization.

7256225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290259 (or 290254 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 7256225 is about 2693.7381090225. The cubic root of 7256225 is about 193.5992097644.

The spelling of 7256225 in words is "seven million, two hundred fifty-six thousand, two hundred twenty-five".