6818225 has 12 divisors (see below), whose sum is σ = 8499456. Its totient is φ = 5425680.

The previous prime is 6818221. The next prime is 6818239. The reversal of 6818225 is 5228186.

It is not a de Polignac number, because 6818225 - 2² = 6818221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6818191 and 6818200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6818221) 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, 4964 + ... + 6186.

It is an arithmetic number, because the mean of its divisors is an integer number (708288).

Almost surely, 2^6818225 is an apocalyptic number.

It is an amenable number.

6818225 is a deficient number, since it is larger than the sum of its proper divisors (1681231).

6818225 is a wasteful number, since it uses less digits than its factorization.

6818225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456 (or 1451 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 6818225 is about 2611.1731080110. The cubic root of 6818225 is about 189.6227509982.

The spelling of 6818225 in words is "six million, eight hundred eighteen thousand, two hundred twenty-five".