25 in Roman numerals
XXV
The number 25 is written XXV in Roman numerals.
How XXV breaks down
| Symbols | Value |
|---|---|
XX | 2 × 10 = 20 |
V | 5 |
XXV | 25 |
Every symbol here is written in descending order and simply added together — no subtractive pairs are involved.
Nearby numbers
| Number | Roman numeral |
|---|---|
| 20 | XX |
| 21 | XXI |
| 22 | XXII |
| 23 | XXIII |
| 24 | XXIV |
| 25 | XXV |
| 26 | XXVI |
| 27 | XXVII |
| 28 | XXVIII |
| 29 | XXIX |
| 30 | XXX |
The seven symbols
I | 1 | C | 100 |
V | 5 | D | 500 |
X | 10 | M | 1,000 |
L | 50 |
25 in other notations
| Roman | XXV |
| Binary | 11001 |
| Hexadecimal | 19 |
| Octal | 31 |
| Written out | twenty-five |
Writing it by hand
Work down through the symbol values, taking as many of each as will fit before moving to the next. For 25:
2 × X = 20 remaining: 5
V = 5 remaining: 0The result reads XXV — 3 characters, against 2 digits in Arabic numerals.
Frequently asked questions
What is 25 in Roman numerals?
XXV
How do you read XXV?
Work left to right, adding each symbol — except where a smaller symbol precedes a larger one, in which case it is subtracted. XX is 20, V is 5, giving 25 in total.
How do you write 25 in words?
twenty-five.
Why is there no zero?
Roman numerals have no symbol for zero. The concept reached Europe only with Hindu-Arabic numerals, centuries after the system was in use — which is a large part of why it was eventually replaced for arithmetic.