SIGN = "²"
Nat_Root= 25
Nat_Kount = 1 
Nat_N2 = 1
while Nat_N2 < Nat_Root:
    Nat_Kount += 1
    Nat_N2 = Nat_Kount * Nat_Kount
    
print( str(Nat_Kount) + SIGN + str(Nat_Root))

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