No, the actual chance of getting the numbers right is. 7070707070*25. With five 1~70 numbers and one 1~25 number. The result is 1 in 42,017,500,000. Or 42 billions. Spending 84 billion dollars.
The company probably advertised the chance of winning at one in 300 some million, because they factor in some statistics.
One example is the breaks down to the classic bell shaped curve. On extreme end of winning when buying one ticket and the other extreme of winning when buying all possible tickets. So they could use a lower number to advertise. With this and some other factors, the company somehow make the winning chances seemed higher.
Not to mention splitting the prize and getting heavily taxed.
So no, you will not profit buy buying every possible tickets.