1845225 has 36 divisors (see below), whose sum is σ = 3385200. Its totient is φ = 960480.

The previous prime is 1845211. The next prime is 1845229. The reversal of 1845225 is 5225481.

It is a happy number.

It is not a de Polignac number, because 1845225 - 2⁴ = 1845209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1845229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13206 + ... + 13344.

2^1845225 is an apocalyptic number.

1845225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1845225 is a deficient number, since it is larger than the sum of its proper divisors (1539975).

1845225 is a wasteful number, since it uses less digits than its factorization.

1845225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 206 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1845225 is about 1358.3905918402. The cubic root of 1845225 is about 122.6543936931.

The spelling of 1845225 in words is "one million, eight hundred forty-five thousand, two hundred twenty-five".