1 one first
2 two second
3 three third
4 four fourth
5 five fifth
6 six sixth
7 seven seventh
8 eight eighth
9 nine ninth
10 ten tenth
11 eleven eleventh
12 twelve twelfth
13 thirteen thirteenth
14 fourteen fourteenth
15 fifteen fifteenth
16 sixteen sixteenth
17 seventeen seventeenth
18 eighteen eighteenth
19 nineteen nineteenth
20 twenty twentieth
21 twenty-onetwenty-first
22 twenty-twotwenty-second
23 twenty-threetwenty-third
24 twenty-fourtwenty-fourth
25 twenty-five twenty-fifth