Their lowest common multiple is 455
35 and 52 are not common factors. Both of them can only be equally divided by 1 and themself so they can't count. 13 goes into 52 for example but it doesn't go into 35 evenly.
1 and 7 will go into both numbers evenly with no remainders
Any multiple of 325.
Yes and no. 13 does not go into 25 evenly but it does go into 91 evenly (7).
No. 35/3 = 11.667
No. 144 is not evenly divisible by 35.
No. 35 is not evenly divisible by 475.
No. 35 is not evenly divisible by two.
No. 35 is not evenly divisible by 21.
Itself and any of its multiples
7
56 is not a multiple of 35