Properties of the Number 72425

Seventy-Two Thousand Four Hundred Twenty-Five

Basics

Value: 72424 → 72425 → 72426

Parity: odd

Prime: No

Previous Prime: 72421

Next Prime: 72431

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 ² × 2897

Divisors: 1, 5, 25, 2897, 14485, 72425

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001101011101001

Octal: 215351

Duodecimal: 35AB5

Hexadecimal: 11ae9

Square: 5245380625

Square Root: 269.1189328159578

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

Number of compositions c of n such that no three points (i,c_i), (j,c_j), (k,c_k) are collinear, where c_i denotes the i-th part. A238686

Concatenation of primitive Pythagorean triangles, sorted. A138043

Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,0,3. A37693

T(n,k)=Number of ways to arrange k nonattacking knights on the lower triangle of an n X n board. A194492

Number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1),U=(1,2), or d=(1,-1) and having no pyramids of the first kind (a pyramid of the first kind is a sequence u^pd^p for some positive integer p, starting at the x-axis). A108452

Number of ways to arrange 5 nonattacking knights on the lower triangle of an n X n board. A194489

The four-is sequence merely counts the letters in the words of the generating sentence. A72425