The number 1,852,500 can be evenly divided by 1 2 3 4 5 6 10 12 13 15 19 20 25 26 30 38 39 50 52 57 60 65 75 76 78 95 100 114 125 130 150 156 190 195 228 247 250 260 285 300 325 375 380 390 475 494 500 570 625 650 741 750 780 950 975 988 1,140 1,235 1,250 1,300 1,425 1,482 1,500 1,625 1,875 1,900 1,950 2,375 2,470 2,500 2,850 2,964 3,250 3,705 3,750 3,900 4,750 4,875 4,940 5,700 6,175 6,500 7,125 7,410 7,500 8,125 9,500 9,750 11,875 12,350 14,250 14,820 16,250 18,525 19,500 23,750 24,375 24,700 28,500 30,875 32,500 35,625 37,050 47,500 48,750 61,750 71,250 74,100 92,625 97,500 123,500 142,500 154,375 185,250 308,750 370,500 463,125 617,500 926,250 and 1,852,500, with no remainder.
Since 1,852,500 cannot be divided by just 1 and 1,852,500, it is a composite number.