odd, composite · 245th positive integer
The number 245
245 is an odd composite number. It is the 245th positive integer.
Quick reference
| Prime factorization | 5 × 7 × 7 |
| Divisors | 1, 5, 7, 35, 49, 245 |
| Binary | 11110101 |
| Hexadecimal | 0xF5 |
| Roman numeral | CCXLV |
| Digit sum | 11 |
| Properties | odd, composite |
Reading 245 in NumGrid context
245 is one of the data points covered by this site’s integer properties and number-guessing puzzles dataset. The detail above comes directly from classical number theory plus NumGrid solver-derived puzzle statistics; the context that follows situates the headline numbers against the broader distribution across positive integers within the NumGrid target pool.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for 245 is typically a peer within positive integers within the NumGrid target pool with similar size, similar exposure, or similar geography — not the national-level summary alone.
Frequently asked
Is 245 a prime number?
No. 245 is composite. Its prime factorization is 5 × 7 × 7.
What are the factors of 245?
The factors (divisors) of 245 are 1, 5, 7, 35, 49, 245.
What is 245 in binary?
245 in binary is 11110101. In hexadecimal it's F5.
What is 245 as a Roman numeral?
245 in Roman numerals is CCXLV.
What's the digit sum of 245?
Adding the digits of 245: 2 + 4 + 5 = 11.