Show first 25 words when display Recent Posts…

Hello,

I am showing the most recent posts on the bottom of my WordPress page. The code I am using is:

<?php wp_get_archives('title_li=&type=postbypost&limit=5'); ?>

With that code, it displays the Title of the most recent post in a list format. Now what I want to do is get it so it has the title, then skips a line, and then has a 25 word caption of the post.

Any help on how I can do this, or if you know the code to do this, then please share!

Thanks!