6890225 has 18 divisors (see below), whose sum is σ = 8948646. Its totient is φ = 5262400.

The previous prime is 6890209. The next prime is 6890227. The reversal of 6890225 is 5220986.

It can be written as a sum of positive squares in 3 ways, for example, as 135424 + 6754801 = 368^2 + 2599^2 .

It is not a de Polignac number, because 6890225 - 2⁴ = 6890209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6890191 and 6890200.

It is not an unprimeable number, because it can be changed into a prime (6890227) 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 17 ways as a sum of consecutive naturals, for example, 12965 + ... + 13485.

It is an arithmetic number, because the mean of its divisors is an integer number (497147).

Almost surely, 2^6890225 is an apocalyptic number.

It is an amenable number.

6890225 is a deficient number, since it is larger than the sum of its proper divisors (2058421).

6890225 is a wasteful number, since it uses less digits than its factorization.

6890225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 6890225 is about 2624.9238084181. The cubic root of 6890225 is about 190.2878830697.

The spelling of 6890225 in words is "six million, eight hundred ninety thousand, two hundred twenty-five".