Properties of the Number 5425

Five Thousand Four Hundred Twenty-Five

Basics

Value: 5424 → 5425 → 5426

Parity: odd

Prime: No

Previous Prime: 5419

Next Prime: 5431

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 ² × 7 × 31

Divisors: 1, 5, 7, 25, 31, 35, 155, 175, 217, 775

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010100110001

Octal: 12461

Duodecimal: 3181

Hexadecimal: 1531

Square: 29430625

Square Root: 73.65459931328118

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = (n-1)*n*(n+4)/6. A5581

Number of reduced words of length n in the Weyl group D₃₁. A162378

20-gonal (or icosagonal) numbers: a(n) = n*(9·n-8). A51872

Write 0,1,2,3,4,... in a triangular spiral; then a(n) is the sequence found by reading the terms along the line from 0 in the direction 0,2,... A62708

T(n,k)=Number of length n+3 0..k arrays with every four consecutive terms having the maximum of some two terms equal to the minimum of the remaining two terms. A249707

Numbers k such that the sum of the squares of the divisors of k is divisible by k. A46762

Total number of vertices in graph formed by the straight line segments connecting the edges of an equilateral triangle with the n-1 points resulting from a subdivision of the sides into n equal pieces, counting coinciding intersection points only once. A331782

Numbers n such that n²+n+41 (Euler's "prime generating polynomial") is not squarefree. A97823

E.g.f.: 1/((1+LambertW(-x))*(1-x)). A277506

T(n,k) = Number of length n+2 0..k arrays with no three elements in a row with pattern aba (with a≠b) and new values 0..k introduced in 0..k order. A243607