I'm looking at a BMW 535 (2015) that is an executive demo and therefore is still available to be leased. What money factor and residual should I expect?

You should be able to lease anything with less than 2500 miles that hasn't been titled. But I have to ask: it's nice to have all this confidential information like rates and residuals, but what are you going to do with it? A lot of this stuff is manufacturer-specific, so unless you have the same software as the dealer (which is virtually impossible), knowing the rate and residual does you no good. The dealer that has the car is most likely going to use the highest rate and residual that BMW will allow; if you don't like the numbers, then look elsewhere for a better deal. Reminds me of an old-school manager, that when asked by a customer to see the invoice on a car would respond, "sure, just as soon as you hike up your wife's skirt so I can get a look at her a$$." Being the know-it-all consumer at almost ANY dealership is going to work against you in the long run.