Basic River Value Question

[StellarWind]

Hero is Cutoff with AKs.

UTG (55/5 passive postflop) limps, Hero raises, Button (60/20 typical postflop) calls, UTG calls. Three players and 7.5 SB to the flop.

Flop is 322 2-suited none for me. I bet and both call. 5.25 BB to the turn.

Turn is off 7. I bet and only UTG calls. 7.25 BB to the river.

River is a third 2. UTG checks and Hero ???