pocketcasts on android is what i use, and i know it has silence trimming and playback speed from .5 to 3.0 in .1 increments.

I have the paid version so im unaware if some/all of these feature require the paid version

I use podcast addict on Android and have for years. It's a little on the techie side with all of its options, but I have it mostly set and forget I really just adjust the speed per podcast which it remembers for you once you set it. I have the paid version which I recommend.