square number

13 LETTERS · STARTS WITH S

square number is a valid 13-letter word worth 25 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1Q10U1A1R1E1N1U1M3B3E1R1
1 + 10 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 3 + 1 + 1 =25 PTS
DOUBLE WORD → 50TRIPLE WORD → 75
MEANING

What does square number mean?

1