1807225 has 24 divisors (see below), whose sum is σ = 2678400. Its totient is φ = 1182720.

The previous prime is 1807213. The next prime is 1807231. The reversal of 1807225 is 5227081.

It is not a de Polignac number, because 1807225 - 2⁷ = 1807097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1807225.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3801 + ... + 4249.

It is an arithmetic number, because the mean of its divisors is an integer number (111600).

2^1807225 is an apocalyptic number.

It is an amenable number.

1807225 is a deficient number, since it is larger than the sum of its proper divisors (871175).

1807225 is a wasteful number, since it uses less digits than its factorization.

1807225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1807225 is about 1344.3306884841. The cubic root of 1807225 is about 121.8065778554.

The spelling of 1807225 in words is "one million, eight hundred seven thousand, two hundred twenty-five".