General Intelligence · Number Triads

Study the given pattern carefully and select the number that can replace the question mark (?) in it. First row - 2, 57, 7 Second row - 6, 225, 3 Third row - 5, ?, 2 (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding/deleting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed)