What comes next - 5 25 29 85 89 ?

Answer 1

5+0=5-----
2+5=7-----7-5=2
2+9=11---11-7=4
8+5=13----13-11=2
8+9=17----17-13=4
next series should have difference of two, hence the total of their digits should be 19
10+9=19