1831225 has 12 divisors (see below), whose sum is σ = 2477520. Its totient is φ = 1331600.

The previous prime is 1831211. The next prime is 1831243. The reversal of 1831225 is 5221381.

It is not a de Polignac number, because 1831225 - 2¹³ = 1823033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1831196 and 1831205.

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 11 ways as a sum of consecutive naturals, for example, 3055 + ... + 3604.

It is an arithmetic number, because the mean of its divisors is an integer number (206460).

2^1831225 is an apocalyptic number.

It is an amenable number.

1831225 is a deficient number, since it is larger than the sum of its proper divisors (646295).

1831225 is a wasteful number, since it uses less digits than its factorization.

1831225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680 (or 6675 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 1831225 is about 1353.2276231292. The cubic root of 1831225 is about 122.3434067407.

The spelling of 1831225 in words is "one million, eight hundred thirty-one thousand, two hundred twenty-five".