6909225 has 24 divisors (see below), whose sum is σ = 12097440. Its totient is φ = 3467520.

The previous prime is 6909173. The next prime is 6909247. The reversal of 6909225 is 5229096.

It is not a de Polignac number, because 6909225 - 2⁸ = 6908969 is a prime.

It is a Curzon number.

6909225 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1435 + ... + 3984.

It is an arithmetic number, because the mean of its divisors is an integer number (504060).

Almost surely, 2^6909225 is an apocalyptic number.

It is an amenable number.

6909225 is a deficient number, since it is larger than the sum of its proper divisors (5188215).

6909225 is a wasteful number, since it uses less digits than its factorization.

6909225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449 (or 5444 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 6909225 is about 2628.5404695382. The cubic root of 6909225 is about 190.4626307063.

The spelling of 6909225 in words is "six million, nine hundred nine thousand, two hundred twenty-five".