Historical Note on 26
The main cultural significance of the number $26$ is that it is the number of distinct letters in the English alphabet:
- $\texttt {A B C D E F G H I J K L M N O P Q R S T U V W X Y Z}$
- $\texttt {a b c d e f g h i j k l m n o p q r s t u v w x y z}$