Even though 22,500 total nukes sounds like a lot, it really isn't nearly enough to "destroy every civilization on Earth several times over". Far from it. Estimates from the height of the cold war showed that an all out nuclear war would cause a three year long nuclear winter and kill at most 40% of the world's population through both direct and indirect effects. Back then there were over 30,000 active warheads. In order to completely wipe out civilization we would need more than 1 million warheads to be detonated. Even that many does not guarantee that humanity would be completely removed from the planet.
I can show you a link that is even better. At the following link a guy sets the world record for flight of the bumblebee at 320bpm. It gets good at about 7 minutes into the video.
http://namesty.multiply.com/video/item/46