$22: Any way to get away from AA?

[KCW12]

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (4 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB (t1670)
BB (t6256)
Hero (t3702)
Button (t1872)

Preflop: Hero is UTG with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">Hero raises to t400</font>, <font color="#666666">2 folds</font>, BB calls t250.

Flop: (t875) 8[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t450</font>, BB calls t450.

Turn: (t1775) Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t1000</font>, BB calls t1000.

River: (t3775) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets t1350</font>, <font color="#CC3333">Hero ?</font>

Final Pot: t7479

Villain is 25/6, and has gotten lucky with some big hands to build his stack. Can I fold this, and should I have just pushed the turn?