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Properties of the Number 40625

Forty Thousand Six Hundred Twenty-Five

Basics

Value: 40624 → 40625 → 40626

Parity: odd

Prime: No

Previous Prime: 40609

Next Prime: 40627

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 5 × 13

Divisors: 1, 5, 13, 25, 65, 125, 325, 625, 1625, 3125

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001111010110001

Octal: 117261

Duodecimal: 1B615

Hexadecimal: 9eb1

Square: 1650390625

Square Root: 201.55644370746373

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

Trimorphic numbers: n3 ends with n. Also m-morphic numbers for all m > 5 such that m-1 is not divisible by 10 and m == 3 (mod 4). A33819
Least hypotenuse of n distinct Pythagorean triangles. A6339
Numbers j that are the hypotenuse of exactly 16 distinct integer-sided right triangles, i.e., j2 can be written as a sum of two squares in 16 ways. A97238
Numbers of the form q1b1 * q2b2 * q3b3 * q4b4 * q5b5 * ... where q1=5, q2=13, q3=17, q4=29, q5=37, ... (A002144) and b1 >= b2 >= b3 >= b4 >= b5 >= .... A54994
a(n) = smallest k with concat(1,k) and concat(n,k) both square numbers. A265432
Numbers of the form (5i)*(13j). A107466
T(n,k)=Number of n X n 0..k arrays with corresponding row and column sums equal. A229870
Numbers whose square can be represented in exactly three ways as the sum of a positive square and a positive fourth power. A345968
a(n) is smallest integral radius of circle centered at (0,0) having 8n-4 lattice points on its circumference; a(n)/2 is smallest half-integral radius circle centered at (1/2,0) having 4n-2 lattice points; a(n)/3 is smallest third-integral radius circle centered at (1/3,0) having 2n-1 lattice points. A46112
Table read by rows of A054994 ordered by A046080. A97756