NEW YORK  - After just one day, Britney Spears' "Hold It Against Me" already ranks as the No. 16 most-played track at pop radio, according to Nielsen BDS.

The first single from Spears' forthcoming ninth album ranks at No. 16 in plays - and No. 7 in audience - on Billboard's Pop Songs building chart, to be released on Billboard.com on January 17.

The survey lists the most played songs on 130 mainstream top 40 radio stations, as monitored by BDS.

"Hold It Against Me" logged 595 plays on Monday on 114 of the chart's reporting stations, or 88% of the panel. The song's first-day airplay translates to 7.8 million in audience.

KIIS (102.7)/Los Angeles and KHTS (Channel 933)/San Diego led all pop reporters with 18 first-day plays each.

"In 24 hours, 'Hold It Against Me' instantly shot to number one in station requests," says KIIS assistant program director/music director Julie Pilat. "Looking at the feedback we got on Twitter, the responses range from 'BEST SONG EVER' to 'Can't get enough of the new Britney' to 'I need this song to breathe!' Undoubtedly, Britney is back and on her way to another No. 1 single."

Fellow mainstream top 40 programmers report that early listener reaction to the song has been overwhelmingly positive.

"It's another home run for Britney," says Sharon Dastur, program director of WHTZ (Z100)/New York, which spun "Hold It Against Me" eight times yesterday. "The Tweets, texts and Facebook posts are overflowing with listeners that are excited that Britney is back with another smash."

"Instant listener reaction in Miami has been massive," says WHYI (Y100)/Miami program director Alex Tear. "We are already playing the song in heavy rotation, in addition to offering instant access to hear it on Y100.com. It sounds great on the radio."

"With all those pickup lines in the song, how can it not get 'picked up' to play on the radio?," muses John Reynolds, WNKS (Kiss 95.1)/Charlotte, N.C., program director. "It's another Spears hit."

With the song's debut on Pop Songs, Spears will up her count to 25 chart entries. It's a sum bested only by Mariah Carey (29) and Madonna (26) in the chart's 18-year history.