6444825 has 12 divisors (see below), whose sum is σ = 10655568. Its totient is φ = 3437200.

The previous prime is 6444803. The next prime is 6444827. The reversal of 6444825 is 5284446.

It is not a de Polignac number, because 6444825 - 2⁸ = 6444569 is a prime.

6444825 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6444827) 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, 42891 + ... + 43040.

It is an arithmetic number, because the mean of its divisors is an integer number (887964).

Almost surely, 2^6444825 is an apocalyptic number.

It is an amenable number.

6444825 is a deficient number, since it is larger than the sum of its proper divisors (4210743).

6444825 is a wasteful number, since it uses less digits than its factorization.

6444825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85944 (or 85939 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 6444825 is about 2538.6659882702. The cubic root of 6444825 is about 186.0960020077.

The spelling of 6444825 in words is "six million, four hundred forty-four thousand, eight hundred twenty-five".