6397225 has 12 divisors (see below), whose sum is σ = 8030736. Its totient is φ = 5054480.

The previous prime is 6397213. The next prime is 6397229. The reversal of 6397225 is 5227936.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-6397225 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6397229) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 534 + ... + 3616.

It is an arithmetic number, because the mean of its divisors is an integer number (669228).

Almost surely, 2^6397225 is an apocalyptic number.

It is an amenable number.

6397225 is a deficient number, since it is larger than the sum of its proper divisors (1633511).

6397225 is a wasteful number, since it uses less digits than its factorization.

6397225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176 (or 3171 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 6397225 is about 2529.2736111382. The cubic root of 6397225 is about 185.6367152798.

The spelling of 6397225 in words is "six million, three hundred ninety-seven thousand, two hundred twenty-five".