1785225 has 24 divisors (see below), whose sum is σ = 3180352. Its totient is φ = 878400.

The previous prime is 1785209. The next prime is 1785227. The reversal of 1785225 is 5225871.

It is not a de Polignac number, because 1785225 - 2⁴ = 1785209 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1785192 and 1785201.

It is not an unprimeable number, because it can be changed into a prime (1785227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60 + ... + 1890.

2^1785225 is an apocalyptic number.

1785225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1785225 is a deficient number, since it is larger than the sum of its proper divisors (1395127).

1785225 is a wasteful number, since it uses less digits than its factorization.

1785225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857 (or 1852 counting only the distinct ones).

The product of its digits is 5600, while the sum is 30.

The square root of 1785225 is about 1336.1231230691. The cubic root of 1785225 is about 121.3102934623.

The spelling of 1785225 in words is "one million, seven hundred eighty-five thousand, two hundred twenty-five".