2109225 has 12 divisors (see below), whose sum is σ = 3487376. Its totient is φ = 1124880.

The previous prime is 2109223. The next prime is 2109253. The reversal of 2109225 is 5229012.

It is not a de Polignac number, because 2109225 - 2¹ = 2109223 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2109223) 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, 13987 + ... + 14136.

2^2109225 is an apocalyptic number.

2109225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2109225 is a deficient number, since it is larger than the sum of its proper divisors (1378151).

2109225 is a wasteful number, since it uses less digits than its factorization.

2109225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28136 (or 28131 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2109225 is about 1452.3171141318. The cubic root of 2109225 is about 128.2451559715.

The spelling of 2109225 in words is "two million, one hundred nine thousand, two hundred twenty-five".