took me 46 h the first time ( doing most side quests[skipped most of dialogues for side quests tho], finding legendary items and getting all the chars) , second time round it took me 22 h just main story and gettin some more trophies

" My friend Andrew got all 100% it in 25 hours.  " 
 

 
Bullshit.

I did very few side quests and finished it in 38 hours.

It took me about 70 hours and I did a fair amount of side quests but not nearly all of them.

My first  play through  was as dwarf warrior took me 88 hours, did all companion quests and got the side quest achievement.
My second time i was a mage took me 34 hours and rushed the dialogs and just focused on the main quests and the morrigan quest.  
I just finished my third time, took me 65 hours as a mage and its was a nice play trough did a lot of quests but rushed the dialogs.

around 50 hours.

Okay I'm done now and it took me 75 hours.

Clocked in at 54. I'm a classic screw-around-procrastinator  in RPGs, so its been interesting for me to read and hear about people playing for 70, 80 even 90 hours and beyond. 
 I felt like I completed a good chunk of the side quests, but maybe I left quite a few out there somewhere. However, I just couldn't motivate myself to read most of the Codex entries. I also didn't do a whole lot of pausing in battle, which might be sacrilege to some, but whatever. I'll get back to it again one day though, see how thorough and meticulous I can be.