Justin Bieber Officially Tops One Direction With No. 1 Album

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It's official! Justin Bieber has topped One Direction for this week's No. 1 album.

Purpose sold 649,000 album equivalents in its first week out, via Billboard, marking Bieber's sixth No. 1 on the Billboard 200 and the biggest sales week of 2015 -- so far.

WATCH: Justin Bieber Dishes on His Most Personal Album Yet 

"I felt like I lost my purpose for a while," Bieber told Entertainment Tonight special correspondent Elvis Duran of New York's Z100, opening up about his most personal album to date. "I just said, 'What am I going through? What am I feeling?' and basically just poured my heart out into this album and made something real."

One Direction came in at No. 2 on the chart this week with 459,000 units of Made in the A.M. sold.

While their previous four releases all debuted at No. 1 on the Billboard 200 -- the band told ET's Samantha Harris that they're more concerned with the fans than the numbers.

WATCH: One Direction's Harry Styles Reveals Pre-Fame Aspirations - 'I Wanted to Be a Lawyer'

"We want our fans to enjoy this album," said Harry Styles. "We feel like it's the best one we've made. We're incredibly proud of it, we love it and hope that they like it. That's what's most important."

While industry insiders struggled to predict whether Bieber or 1D would come out on top, next week's No. 1 offering is already much more clear. Adele released her highly anticipated 25 on Friday, selling 900,000 copies on iTunes in its first day on the market. The album is already on track to break the all-time one-week U.S. album sales record, previously held by *NSYNC's No Strings Attached.

Beyond her incredible voice, Adele has been showing off her wicked sense of humor in her recent press tour. Watch below as Adele pulls off a hilarious prank, auditioning to play an Adele impersonator, in the video below.