259 (number)

In mathematics

• a semiprime
• 6³ + 6² + 6 + 1, so 259 is a repdigit in base 6
• a lucky number
• Assuming A=1, B=2, C=3, D=4, etc..., all the way up to Z=26, when 259 is spelled out in word form, including the word "and", and when every single number indicating its letter position is added, the value is 259.