Properties of the Number 1725

One Thousand Seven Hundred Twenty-Five

Basics

Value: 1724 → 1725 → 1726

Parity: odd

Prime: No

Previous Prime: 1723

Next Prime: 1733

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 ² × 23

Divisors: 1, 3, 5, 15, 23, 25, 69, 75, 115, 345

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11010111101

Octal: 3275

Duodecimal: BB9

Hexadecimal: 6bd

Square: 2975625

Square Root: 41.53311931459037

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 partitions of n into distinct parts >= 2. A25147

Number of steps required to reach zero in the wrecker ball sequence starting with n: On the k-th step (k = 1, 2, 3, ...) move a distance of k in the direction of zero. If the result has occurred before, move a distance of k away from zero instead. Set a(n) = -1 if 0 is never reached. A228474

Number of compositions of n whose negation is not unimodal. A332669

Numbers m such that there are precisely 3 groups of order m. A55561

Number of partitions of n into distinct parts, the least being 1. A96765

a(n) = 3·n² + 6·n. A67725

Numbers that are the sum of 3 nonzero squares in exactly 10 ways. A25330

a(n) = n² + n + 3. A27688

Sum of odd numbers in range 10·n to 10·n+9. A53742

Triangle U, read by rows, where column k of U^j+1 = column j of P^3k+1 for j>=0, k>=0 and P=A136220. A136228