25121

25121 is a five-digit integer in the decimal numeral system. It lies between 25120 and 25122 and is an odd number.

In mathematics, the digit sum of 25121 is 11, which means the number is not divisible by 3 or 9. It does not end in 0 or 5, so it is not divisible by 2 or 5. Tests for prime factors up to the square root of 25121 (about 158) have found no divisors among primes up to 157, which strongly suggests that 25121 is prime, although a formal proof would require a complete factorization.

25121 is also used in real-world coding systems. In the United States, 25121 is used as a ZIP code in the postal system. Beyond mailing addresses, 25121 can serve as a numeric identifier in databases, model numbers, or financial statements.