Properties of the Number 25001

Twenty-Five Thousand One

Basics

Value: 25000 → 25001 → 25002

Parity: odd

Prime: No

Previous Prime: 24989

Next Prime: 25013

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 23 × 1087

Divisors: 1, 23, 1087, 25001

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110000110101001

Octal: 60651

Duodecimal: 12575

Hexadecimal: 61a9

Square: 625050001

Square Root: 158.117045254457

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 index change (+-,+-) 0,0 0,1 0,2 or 1,0. A263816

Numbers k such that k¹⁴ == 1 (mod 15³). A56087

Constant term in the reduction of the n-th Fibonacci polynomial by x³->x²+2x+1. A192772

A239461(n) / n². A239464

A089450 indexed by A000040. A89525

p-INVERT of (1,0,0,1,0,0,1,0,0,...), where p(S) = 1 - S - S² - S³. A292322

Numbers n such that n² = a² + b⁵ (with integers a, b > 0) and gcd(a, b, n) = 1. A293284

a(n) is the number of regions formed by n-secting the angles of an octagon. A335769

a(n) = 40·n² + 1. A158602

Numbers k such that the decimal representation of k ends that of the sum of the first k cubes. A301912