1825489 has 2 divisors, whose sum is σ = 1825490. Its totient is φ = 1825488.

The previous prime is 1825459. The next prime is 1825493. The reversal of 1825489 is 9845281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1782225 + 43264 = 1335^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825489 - 2⁵ = 1825457 is a prime.

It is a Chen prime.

1825489 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1825429) by changing a digit.

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 as a sum of consecutive naturals, namely, 912744 + 912745.

It is an arithmetic number, because the mean of its divisors is an integer number (912745).

2^1825489 is an apocalyptic number.

It is an amenable number.

1825489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1825489 is an equidigital number, since it uses as much as digits as its factorization.

1825489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 37.

The square root of 1825489 is about 1351.1065835085. The cubic root of 1825489 is about 122.2155331815.

It can be divided in two parts, 182 and 5489, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 1825489 in words is "one million, eight hundred twenty-five thousand, four hundred eighty-nine".