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Number

25,013

25,013 is a prime, odd.

Arithmetic Number Chen Prime Deficient Number Evil Number Prime Pythagorean Prime Recamán's Sequence Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
11
Digit product
0
Digital root
2
Palindrome
No
Bit width
15 bits
Reversed
31,052
Recamán's sequence
a(81,918) = 25,013
Square (n²)
625,650,169
Cube (n³)
15,649,387,677,197
Divisor count
2
σ(n) — sum of divisors
25,014
φ(n) — Euler's totient
25,012

Primality

25,013 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 25013
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 25,013)
1 × 25013
First multiples
25,013 · 50,026 (double) · 75,039 · 100,052 · 125,065 · 150,078 · 175,091 · 200,104 · 225,117 · 250,130

Sums & aliquot sequence

As a sum of two squares: 7² + 158²
As consecutive integers: 12,506 + 12,507

Representations

In words
twenty-five thousand thirteen
Ordinal
25013th
Binary
110000110110101
Octal
60665
Hexadecimal
0x61B5
Base64
YbU=
One's complement
40,522 (16-bit)
In other bases
ternary (3) 1021022102
quaternary (4) 12012311
quinary (5) 1300023
senary (6) 311445
septenary (7) 132632
nonary (9) 37272
undecimal (11) 1787a
duodecimal (12) 12585
tridecimal (13) b501
tetradecimal (14) 9189
pentadecimal (15) 7628

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓎆𓏺𓏺𓏺
Greek (Milesian)
͵κειγʹ
Mayan (base 20)
𝋣·𝋢·𝋪·𝋭
Chinese
二萬五千零一十三
Chinese (financial)
貳萬伍仟零壹拾參
In other modern scripts
Eastern Arabic ٢٥٠١٣ Devanagari २५०१३ Bengali ২৫০১৩ Tamil ௨௫௦௧௩ Thai ๒๕๐๑๓ Tibetan ༢༥༠༡༣ Khmer ២៥០១៣ Lao ໒໕໐໑໓ Burmese ၂၅၀၁၃

Digit at this position in famous constants

π — Pi (π)
Digit 25,013 = 1
e — Euler's number (e)
Digit 25,013 = 2
φ — Golden ratio (φ)
Digit 25,013 = 3
√2 — Pythagoras's (√2)
Digit 25,013 = 6
ln 2 — Natural log of 2
Digit 25,013 = 4
γ — Euler-Mascheroni (γ)
Digit 25,013 = 7

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 24,989 (gap of 24)
  • Next prime: 25,031 (gap of 18)
Unicode codepoint
CJK Unified Ideograph-61B5
U+61B5
Other letter (Lo)

UTF-8 encoding: E6 86 B5 (3 bytes).

Hex color
#0061B5
RGB(0, 97, 181)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.97.181.

Address
0.0.97.181
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.97.181

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 25013 first appears in π at position 207,987 of the decimal expansion (the 207,987ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.