2806225 has 6 divisors (see below), whose sum is σ = 3479750. Its totient is φ = 2244960.

The previous prime is 2806211. The next prime is 2806231. The reversal of 2806225 is 5226082.

2806225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 665856 + 2140369 = 816^2 + 1463^2 .

It is not a de Polignac number, because 2806225 - 2⁹ = 2805713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 112249 = 2806225 / (2 + 8 + 0 + 6 + 2 + 2 + 5).

2806225 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2806225.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 56100 + ... + 56149.

2^2806225 is an apocalyptic number.

2806225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2806225 is a deficient number, since it is larger than the sum of its proper divisors (673525).

2806225 is a wasteful number, since it uses less digits than its factorization.

2806225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112259 (or 112254 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2806225 is about 1675.1790949030. The cubic root of 2806225 is about 141.0503483659.

The spelling of 2806225 in words is "two million, eight hundred six thousand, two hundred twenty-five".