Function that returns true if n is a power of 5
def ispower ( n ) : NEW_LINE INDENT if ( n < 125 ) : NEW_LINE INDENT return ( n == 1 or n == 5 or n == 25 ) NEW_LINE DEDENT if ( n % 125 != 0 ) : NEW_LINE INDENT return 0 NEW_LINE DEDENT else : NEW_LINE INDENT return ispower ( n // 125 ) NEW_LINE DEDENT DEDENT