A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4825170 can be evenly divided by 1 2 3 5 6 7 9 10 14 15 18 21 23 27 30 35 37 42 45 46 54 63 69 70 74 81 90 105 111 115 126 135 138 161 162 185 189 207 210 222 230 259 270 315 322 333 345 370 378 405 414 483 518 555 567 621 630 666 690 777 805 810 851 945 966 999 1,035 1,110 1,134 1,242 1,295 1,449 1,554 1,610 1,665 1,702 1,863 1,890 1,998 2,070 2,331 2,415 2,553 2,590 2,835 2,898 2,997 3,105 3,330 3,726 3,885 4,255 4,347 4,662 4,830 4,995 5,106 5,670 5,957 5,994 6,210 6,993 7,245 7,659 7,770 8,510 8,694 9,315 9,990 11,655 11,914 12,765 13,041 13,986 14,490 14,985 15,318 17,871 18,630 20,979 21,735 22,977 23,310 25,530 26,082 29,785 29,970 34,965 35,742 38,295 41,958 43,470 45,954 53,613 59,570 65,205 68,931 69,930 76,590 89,355 104,895 107,226 114,885 130,410 137,862 160,839 178,710 209,790 229,770 268,065 321,678 344,655 482,517 536,130 689,310 804,195 965,034 1,608,390 2,412,585 and 4,825,170, with no remainder.
Since 4,825,170 cannot be divided by just 1 and 4,825,170, it is not a prime number.