One ronna-reagan is approximately 4% of the sun's mass: https://www.google.com/search?q=%28185+pounds%29+*+10%5E27+%...

At least if I have that right. A single Reagan's mass is from: https://www.celebheights.com/s/Ronald-Reagan-1750.html

Or, if you prefer, our sun as about 25 ronna-Reagans.

weird question for anyone with the relevant knowledge, would 25 ronna-Reagans in one place behave differently than our sun? I know that mass would be mostly oxygen, but at that scale does it matter?

You should ask Randall Munroe! :)

http://what-if.xkcd.com

He did something pretty close early on: https://what-if.xkcd.com/4/

Are you asking in terms of gravitation or as a star?

By mass, the sun is 71% Hydrogen and 27.1% Helium, the last 1.9% or so being heavier elements (much of that being oxygen.

I’m no expert, but I suspect a mass of 25 ronna-Reagans would not make a very good star. I imagine it might collapse into a dense Oxygen and Carbon rich sphere, and in that environment various chemical reactions might turn it into some other kind of material.

But maybe I’m way off.

And 1 ronna-mcdonald's is over 9.9e37 served!