X0101 24F-2NT LIVE 0001433442 XXXXXXXX 333-157807 false false S-6 Van Kampen Unit Trusts Taxable Income Series 170 225 Liberty Street New York NY X1 10281 true 811-2754 333-157807 04/30/2022 0.00 328366.00 28760490.00 29088856.00 0.00 (29088856.00) 0.000092700 0.00 0.00 0.00 0.00 0.00 CRAIG S. FALDUTO Executive Director, Investment Research 05/25/2022