|Pos|No|Rider|Manufacturer|Laps|Time|Grid|Points|
|---|---|---|---|---|---|---|---|
|1|58|Marco Simoncelli|Gilera|25|39:02.553|1|25|
|2|19|Álvaro Bautista|Aprilia|25|+0.223|3|20|
|3|36|Mika Kallio|KTM|25|+14.450|2|16|
|4|60|Julian Simon|KTM|25|+14.478|6|13|
|5|6|Alex Debon|Aprilia|25|+26.226|8|11|
|6|15|Roberto Locatelli|Gilera|25|+26.392|11|10|
|7|72|Yuki Takahashi|Honda|25|+26.434|7|9|
|8|41|Aleix Espargaro|Aprilia|25|+40.546|9|8|
|9|14|Ratthapark Wilairot|Honda|25|+1:00.219|12|7|
|10|32|Fabrizio Lai|Gilera|25|+1:20.825|13|6|
|11|17|Karel Abraham|Aprilia|25|+1:22.802|17|5|
|12|25|Alex Baldolini|Aprilia|25|+1:22.864|18|4|
|13|10|Imre Toth|Aprilia|25|+1:23.995|16|3|
|14|52|Lukas Pesek|Aprilia|25|+1:39.740|14|2|
|15|35|Simone Grotzkyj|Gilera|24|+1 Lap|21|1|
|16|92|Daniel Arcas|Honda|24|+1 Lap|20||
|17|45|Doni Tata Pradita|Yamaha|24|+1 Lap|22||
|Ret|4|Hiroshi Aoyama|KTM|15|Retirement|4||
|Ret|75|Mattia Pasini|Aprilia|15|Accident|10||
|Ret|55|Héctor Faubel|Aprilia|4|Accident|5||
|Ret|90|Federico Sandi|Aprilia|1|Accident|15||
|Ret|43|Manuel Hernandez|Aprilia|1|Retirement|19||
|DNQ|27|Stefano Bianco|Gilera|||||
|DNQ|89|Ho Wan Chow|Aprilia|||||

Question: what is the total number of rider?
Answer: 24