1783825 has 6 divisors (see below), whose sum is σ = 2211974. Its totient is φ = 1427040.

The previous prime is 1783813. The next prime is 1783829. The reversal of 1783825 is 5283871.

It can be written as a sum of positive squares in 3 ways, for example, as 591361 + 1192464 = 769^2 + 1092^2 .

It is not a de Polignac number, because 1783825 - 2¹¹ = 1781777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1783829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35652 + ... + 35701.

2^1783825 is an apocalyptic number.

It is an amenable number.

1783825 is a deficient number, since it is larger than the sum of its proper divisors (428149).

1783825 is an equidigital number, since it uses as much as digits as its factorization.

1783825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71363 (or 71358 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 1783825 is about 1335.5991165017. The cubic root of 1783825 is about 121.2785740571.

The spelling of 1783825 in words is "one million, seven hundred eighty-three thousand, eight hundred twenty-five".