If length of string is single digit then it 's  not divisible by 25
n = len ( st ) NEW_LINE if ( n == 1 ) : NEW_LINE INDENT return False NEW_LINE DEDENT return ( ( int ) ( st [ n - 1 ] ) == 0 and ( ( int ) ( st [ n - 2 ] ) == 0 ) or ( ( int ) ( st [ n - 2 ] ) * 10 + ( int ) ( st [ n - 1 ] ) % 25 == 0 ) ) NEW_LINE