The number 2,425,920 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 19 20 21 24 28 30 32 35 38 40 42 48 56 57 60 64 70 76 80 84 95 96 105 112 114 120 133 140 152 160 168 190 192 210 224 228 240 266 280 285 304 320 336 361 380 399 420 448 456 480 532 560 570 608 665 672 722 760 798 840 912 960 1,064 1,083 1,120 1,140 1,216 1,330 1,344 1,444 1,520 1,596 1,680 1,805 1,824 1,995 2,128 2,166 2,240 2,280 2,527 2,660 2,888 3,040 3,192 3,360 3,610 3,648 3,990 4,256 4,332 4,560 5,054 5,320 5,415 5,776 6,080 6,384 6,720 7,220 7,581 7,980 8,512 8,664 9,120 10,108 10,640 10,830 11,552 12,635 12,768 14,440 15,162 15,960 17,328 18,240 20,216 21,280 21,660 23,104 25,270 25,536 28,880 30,324 31,920 34,656 37,905 40,432 42,560 43,320 50,540 57,760 60,648 63,840 69,312 75,810 80,864 86,640 101,080 115,520 121,296 127,680 151,620 161,728 173,280 202,160 242,592 303,240 346,560 404,320 485,184 606,480 808,640 1,212,960 and 2,425,920, with no remainder.
Since 2,425,920 cannot be divided by just 1 and 2,425,920, it is a composite number.