4725
NGC 4725 has only one spiral arm.
- Odd
- Composite
Where 4725 fits
Why 4725 is special
Single-armed spirals are rare and generally indicate a recent interaction, since a symmetric disc does not produce one on its own.
4725 is part of
Factors & digit properties
- Divisors (24)
- 1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 525, 675, 945, 1575, 4725
- Prime factorisation
- 3^3 × 5^2 × 7
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 4725
- Scientific notation
- 4.725 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 0 1 0 0 1 1 1 0 1 0 1
1 × 4,096 + 0 × 2,048 + 0 × 1,024 + 1 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 1 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 4,725
Octal
1 1 1 6 5
1 × 4,096 + 1 × 512 + 1 × 64 + 6 × 8 + 5 × 1 = 4,725
Hexadecimal
1 2 7 5
1 × 4,096 + 2 × 256 + 7 × 16 + 5 × 1 = 4,725
Read as powers of two: 4,096 + 512 + 64 + 32 + 16 + 4 + 1 = 4,725.
In historical numeral systems
Egyptian
4 lotuses, 7 coils of rope, 2 hobbles, 5 strokes
4 × 1,000 + 7 × 100 + 2 × 10 + 5 × 1 = 4,725. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Happy number
- Lucky number (mathematical sieve)
Related numbers & connections
A single spiral arm and a collision in progress are both signatures of gravitational interaction.
View 4038 →Other connections
- is associated with4038
why?
Strength 0.50, confidence "high".
Science
NGC 4725 is a barred spiral displaying a single prominent arm, a configuration usually associated with tidal interaction rather than internal dynamics.
DocumentedSciencePeriod: 1785–
Common questions
Is 4725 a prime number?
No, 4725 is not prime.
What are the factors of 4725?
The factors of 4725 are 1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 525, 675, 945, 1575, 4725.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026