Properties of the Number 40825

Forty Thousand Eight Hundred Twenty-Five

Basics

Value: 40824 → 40825 → 40826

Parity: odd

Prime: No

Previous Prime: 40823

Next Prime: 40829

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 ² × 23 × 71

Divisors: 1, 5, 23, 25, 71, 115, 355, 575, 1633, 1775

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001111101111001

Octal: 117571

Duodecimal: 1B761

Hexadecimal: 9f79

Square: 1666680625

Square Root: 202.0519735117675

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

T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having directed index change -1,-1 1,0 -1,-2 -2,-2 or 0,1. A264676

Numbers k such that σ(k) = ψ(k) + τ(k)³. A390297

a(n) = 56·n² + 1. A158660

a(n) = (A022010(n) - 179)/210. A357889

Number of (n+1)X(3+1) arrays of permutations of 0..n·4+3 with each element having directed index change -1,-1 1,0 -1,-2 -2,-2 or 0,1. A264671

Antidiagonal sums of A343053. A377521

Continued fraction for sqrt(855). A40825