My instinct when seeing this was, its an easy fold. However as I just wrote in another thread, you really want to use ICMizer to answer these kind of questions. They give you a free daily hand, so you dont even need to purchase the program, if you dont want to.
Anyways I plugged in your hand telling the program, that 27 places paid, and there were 54 players left. This is obviously not quite true, because I dont know, but presumably you were not in the money or near the bubble, which is the most important thing to get right. As for the players on the other tables I gave them an average stack similar to that on your table. This is generally, how you should analyse MTT hands. This is ICMizers range for Hero calling:
77+, AJ+
Thats it. Pretty snug range right? And this is because, as everyone else has already said, he is jamming for 25BB, and you have no fold equity when calling. As for "the table playing loose" sure, ok, but does this also mean a lot of very loose jams for 25BB? Maybe, maybe not. ICMizer has him jamming this range:
55+, AJo+, A2s-A5s, A7s+, KQo, KTs+, QTs+, JTs
To justify a loose call you would need to assume, he is jamming even wider than this. And just pause for a moment and then think honestly about, if he is even jamming all of the above? 55? A3s? JTs? Like really? He is not min-raising or limping at least some of those hands? I think, he is.
I will even go so far as to say, that him open jamming for this many blinds is probably a bet sizing tell. I think, he do this with hands, that are strong but also difficult to play out of position on many boards. I think, his range is most likely something like:
77-JJ, AK
And if I plug this into ICMizer, now your calling range is:
99+, AKs
Thats right. Even AKo is a fold, if this is actually his range. Now I would not actually fold AKo in real time, because there is always room for error. Maybe he jam AQ, and then AK is a profitable call. But something as bad as A8s is never anywhere near a call. I hope this analysis helped you to think a bit deeper about a spot like this, and what your opponents are actually likely to be jamming with