252525252
252525252 is a nine-digit decimal number. Its digits form a palindrome and alternate between 2 and 5, producing the sequence 2-5-2-5-2-5-2-5-2. In standard notation it is written as 252,525,252.
The number is even, so divisible by 2. The sum of its digits is 30, making it
Structurally, the value can be seen as four repetitions of the two-digit block 25 with a trailing
Context and usage: In mathematics and computer science, 252525252 is primarily encountered as an example of