Properties of the Number 3825

Three Thousand Eight Hundred Twenty-Five

Basics

Value: 3824 → 3825 → 3826

Parity: odd

Prime: No

Previous Prime: 3823

Next Prime: 3833

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 ² × 17

Divisors: 1, 3, 5, 9, 15, 17, 25, 45, 51, 75

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011110001

Octal: 7361

Duodecimal: 2269

Hexadecimal: ef1

Square: 14630625

Square Root: 61.84658438426491

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

The non-repetitive Kaprekar binary numbers in decimal. A163205

8-fold factorials: a(n) = ∏_k=0..n-1 (8·k+1). A45755

Generalized 30-gonal (or triacontagonal) numbers: m*(14·m - 13) with m = 0, +1, -1, +2, -2, +3, -3, ... A316729

Triangle T(n,k) represents the coefficients of (x⁹*d/dx)ⁿ, where n=1,2,3,...;generalization of Stirling numbers of second kind A008277, Lah-numbers A008297. A223511

Numbers k such that (k!-10)/10 is prime. A139205

a(n) = 2·n² + 11·n + 12. A71355

Octuple factorial, 8-factorial, n!8, n!!!!!!!!. A114800

a(n) = 17·n². A244630

30-gonal numbers: a(n) = n*(14·n-13). A254474

Numbers n such that p(8n) is prime, where p(n) is the number of partitions of n. A114168