6813225 has 36 divisors (see below), whose sum is σ = 12360816. Its totient is φ = 3587040.

The previous prime is 6813199. The next prime is 6813227. The reversal of 6813225 is 5223186.

6813225 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6813225 - 2⁵ = 6813193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6813227) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23934 + ... + 24216.

It is an arithmetic number, because the mean of its divisors is an integer number (343356).

Almost surely, 2^6813225 is an apocalyptic number.

It is an amenable number.

6813225 is a deficient number, since it is larger than the sum of its proper divisors (5547591).

6813225 is a wasteful number, since it uses less digits than its factorization.

6813225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 398 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 6813225 is about 2610.2155083441. The cubic root of 6813225 is about 189.5763877287.

The spelling of 6813225 in words is "six million, eight hundred thirteen thousand, two hundred twenty-five".