Ordinarily numbers are written the same as they are in English (with the Arabic numbers). In Japanese, this would be written: 9585キロ
there are 5 thousand Japanese characters
yes, all naruto characters are japanese they usually use english names for non-japanese characters in manga & animes
Yes. All of the Sanrio characters are Japanese.
Kanji characters. Kanji characters are logographic characters that represent whole words or ideas in the Japanese writing system.
The Japanese have a special keyboard with Kangi characters.
It can be written in Japanese as: ケートリン
The Japanese writing was based on China's characters :)
Not necessarily.
The Japanese word for positive is Pojitibu or in Japanese tradition characters ポジティブ
Japanese language uses 2 alphabets (hiragana and katakana) in addition to more complex characters that are derived from the Chinese written language. Kanji (Japanese characters) are the same as Chinese characters.
The characters Sakura and Naruto are the main characters in the Japanese anime series Naruto. More detail about this Japanese cartoon can be found on Wikipedia.
化学 Kagaku