Harshad number is defined as an integer that is divisible by the sum of its digits.

Interestingly, the years 2022-2025 are Harshad numbers. It is worth noting that having more than two consecutive Harshad years is a rare occurrence. The last time it occurred was over 1000 years ago for years 1014-1017. The next time it is expected to occur after 1000+ years will be during the years 3030-3033.