A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5627250 can be evenly divided by 1 2 3 5 6 9 10 15 18 25 30 41 45 50 61 75 82 90 122 123 125 150 183 205 225 246 250 305 366 369 375 410 450 549 610 615 738 750 915 1,025 1,098 1,125 1,230 1,525 1,830 1,845 2,050 2,250 2,501 2,745 3,050 3,075 3,690 4,575 5,002 5,125 5,490 6,150 7,503 7,625 9,150 9,225 10,250 12,505 13,725 15,006 15,250 15,375 18,450 22,509 22,875 25,010 27,450 30,750 37,515 45,018 45,750 46,125 62,525 68,625 75,030 92,250 112,545 125,050 137,250 187,575 225,090 312,625 375,150 562,725 625,250 937,875 1,125,450 1,875,750 2,813,625 and 5,627,250, with no remainder.
Since 5,627,250 cannot be divided by just 1 and 5,627,250, it is not a prime number.