"Number One Spot" is the second single from rapper Ludacris' 2004 album "The Red Light District".
 The song heavily samples "Soul Bossa Nova" by Quincy Jones, which was used as the theme in the "Austin Powers" film series; "Austin Powers" references play major parts in "Number One Spot" and its video.
"The Final Countdown" is a song by Swedish rock band Europe, released in 1986.
 Written by Joey Tempest, it was the first single from the band's third studio album, also named "The Final Countdown".
 The song reached No. 1 in 25 countries, including the United Kingdom, and was certified gold in the United Kingdom in 1986.
 In the United States the song peaked at No. 8 on the "Billboard" Hot 100 and at No. 18 on the "Billboard" Album Rock Tracks chart.
"Simple Life" is a song written by Elton John and Bernie Taupin and was the fourth single release from John's 1992 CD, "The One".
 "Simple Life" was John's thirteenth number one on the Adult Contemporary chart.
 The single spent three weeks at the number one spot and reached number thirty on the "Billboard" Hot 100.
"Complicated" is the debut single by Canadian singer-songwriter Avril Lavigne, released in 2002 from her debut album, "Let Go".
 It was written by Lavigne and The Matrix (Scott Spock, Lauren Christy, and Graham Edwards), and produced by The Matrix.
 The single reached number one in Australia (for six weeks), New Zealand and Mexico (for nine weeks), number two on the "Billboard" Hot 100, behind "Hot in Herre" by Nelly and number three in the United Kingdom.
 Based on its chart performance, the song is Lavigne's second most successful single (only behind her 2007 single "Girlfriend") and was one of the most successful releases of 2002 with sales of over 3 million copies sold worldwide.
 Lavigne broke a record set by Natalie Imbruglia's "Torn" when "Complicated" held the number one spot on the Adult Top 40 chart for 16 weeks in a row.
 "Complicated" was nominated for two Grammy Awards for Song of the Year and Best Female Pop Vocal Performance.
"This is America" is a song written by Steve Messer and performed by the country western singer Justin Tranchita.
 The song was written in 2015 and debuted on the Billboard Emerging Artist chart Nov 21st, 2015 at number four.
 The following week "This is America" reached number one on the  Billboard charts.
The song became popular after Presidential hopeful Ben Carson used it as his campaign song for his 2016 election bid.
 Digg.com called the song one of the worst campaign songs in history.
 Empty Lighthouse Magazine and The Guardian were kinder to the song.
 "This is America" was released as a single in November, 2015 and will also be included in Tranchita's freshman country album American Man in 2016.
 This is America returned to the number one spot again in 2016 after spending ten weeks on Billboards Emerging chart.
 This gave Tranchita a number one hit with the same song in two different years.
"Symphony" is a song by British classical crossover band Clean Bandit featuring Swedish singer Zara Larsson.
 It is taken as the third single from their upcoming second album.
 The song was also released as the sixth single from Larsson's second studio album, "So Good" (2017).
 The song is the final track on the album.
 The song peaked at number one on the Swedish singles chart, becoming Larsson's fifth number one in her home country.
 It has also reached number one in Norway and the United Kingdom, becoming Larsson's first number one single in the latter country, as well as Clean Bandit's third number one in the UK.
"Upside Down" is a song written and produced by Chic members Nile Rodgers and Bernard Edwards.
 It was recorded by American singer Diana Ross.
 The song was issued as a single through the Motown label in 1980, as the lead single from her self-titled tenth studio album, "diana".
 "Upside Down" hit number one on the "Billboard" Hot 100 chart on September 6, 1980.
 It also hit number one on the "Billboard" Disco and Soul charts.
 The single was released a full four weeks after the album was released.
 It held down the number one spot for four weeks.
Rolf Magnus Joakim Larsson (born 19 August 1963), better known as Joey Tempest, is a Swedish singer, lead singer, and main songwriter of the rock band Europe.
 He has written hits which include "The Final Countdown", "Rock the Night", "Cherokee" and "Superstitious".
"Dragostea Din Tei" (]    , "Love from the lindens", official English title: Words of Love), also informally known as "Ma Ya Hi" and "The Numa Numa Song" (see ), is the most successful single by the Moldovan pop group O-Zone, sung in Romanian.
 It shot to the number one spot on the Eurochart Hot 100, where it remained for 12 weeks between June and early September 2004.
 It topped the single charts in France, Germany and Austria for over three months, reached three in the United Kingdom and 72 on the US Pop 100.
 The song became the fourth-best-selling single of the 21st century in France, with 1,170,000 units sold.
 A popular cover of the song was made by Italian-Romanian pop singer Haiducii, which also charted in many countries, especially Italy and Sweden, where it topped the singles charts.
 The original song was made notable in the United States by the viral video of Gary Brolsma dancing to the song, calling it "Numa Numa".
Eva Elisabeth "Liza" Marklund (born 9 September 1962) is a Swedish journalist and crime writer.
 She was born in Pålmark near Piteå, Norrbotten.
 Her novels, most of which feature the fictional character Annika Bengtzon, a newspaper journalist, have been published in thirty languages.
 Marklund is the co-owner of Sweden's third largest publishing house, Piratförlaget and a columnist in the Swedish tabloid "Expressen".
 She is also a Unicef ambassador. "
The Postcard Killers", a crime thriller written in collaboration with American bestselling author James Patterson, is Marklund's twelfth book.
 It was published on January 27, 2010, in Sweden, and became number one on the Swedish bestseller list in February 2010.
 It was published on 16 August 2010 in the United States.
 At the end of August, it reached number one in the "New York Times" best-seller list, making Liza Marklund the second Swedish author (the first one being Stieg Larsson with the Millennium Trilogy) ever to reach the number one spot.
 Marklund lives in Spain with her husband Mikael.

Question: In how many countries did a song written by Rolf Magnus Joakim Larsson go to the number one spot?
Answer: 25