Is your garage attached? Mine is and is always 10 degrees warmer than outside temps because it shares a common wall. 25 would not scare me at all, if so. It will take 24 hours at least for your beer to come into temp equilibrium anyway.
Cold crashing does not affect priming unless it gets below freezing temps (remember beer freezes a few degrees below 32 b/c of the alcohol). If you have star san or vodka in your airlock, no issues if the colder temps suck some in the fermenter.
Primary #1: Umlaut my Kölsch VII #2: Empty
Secondary #1: Empty #2: Empty #3: Cab MerMarqeNac Wine
Kegged: Mugged a Monk Paters
Bottles: Dark Belgian Strong, Black Raspberry Rhubarb wine, RIS, Carmel Apple Cider, Big 50 Barleywine, Framboise Lambic, Barolo Wine, Berry Rhubarb Wine, Black Currant wine
On Deck: BGSA