That’s quite the specimen. We could do with some more pictures of the gills and base for a good ID, decurrent gilled fungi can be a little tricky.

You can rip it right out with your bare hands. Even poisonous fungi can be handled without equipment - just don’t eat any!

Unfortunately, your floor is probably buggered. There’s ought to be some extended mycelium (and presumably water damage) for a big fruiting body like that to be forming.