I found several hints that the 325 might be a twin, which would make sense to me as other Cessna aircraft with a 3nn type number are also twins.
I did also, however, find several references also to a single including one, a crop duster, which crashed, N1175D, but that is also shown as a Cessna TL-19D
.
Couldn't find any pics or drawings or description or specs anywhere.