Answer
$$\fbox{twenty five thousand five hundred and ninety four}$$
Work Step by Step
We first solve for the requested number. Performing subtraction, we find:
$$ 25,600-6=25594$$
We are asked to write the given number using words. To do this, we first describe the digit on the left side of the number and then move right. Doing this, we find that the number is:
$$\fbox{twenty five thousand five hundred and ninety four}$$