Il numero romano CCLXV nel sistema decimale vale: 265.
CCLXV in latino si scrive ducenti sexaginta quinque,
mentre in italiano duecentosessantacinque.
CCXLVI, CCXLVII, CCXLVIII, CCXLIX, CCL, CCLI, CCLII, CCLIII, CCLIV, CCLV, CCLVI, CCLVII, CCLVIII, CCLIX, CCLX, CCLXI, CCLXII, CCLXIII, CCLXIV, CCLXVI, CCLXVII, CCLXVIII, CCLXIX, CCLXX, CCLXXI, CCLXXII, CCLXXIII, CCLXXIV, CCLXXV, CCLXXVI, CCLXXVII, CCLXXVIII, CCLXXIX, CCLXXX, CCLXXXI, CCLXXXII, CCLXXXIII, CCLXXXIV