Search a number
1725 = 35223
BaseRepresentation
bin11010111101
32100220
4122331
523400
611553
75013
oct3275
92326
101725
111329
12bb9
13a29
148b3
157a0
hex6bd

1725 has 12 divisors (see below), whose sum is σ = 2976. Its totient is φ = 880.

The previous prime is 1723. The next prime is 1733. The reversal of 1725 is 5271.

It is a happy number.

It is not a de Polignac number, because 1725 - 21 = 1723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64 + ... + 86.

It is an arithmetic number, because the mean of its divisors is an integer number (248).

1725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1725 is a deficient number, since it is larger than the sum of its proper divisors (1251).

1725 is a wasteful number, since it uses less digits than its factorization.

1725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36 (or 31 counting only the distinct ones).

The product of its digits is 70, while the sum is 15.

The square root of 1725 is about 41.5331193146. The cubic root of 1725 is about 11.9930515329.

Adding to 1725 its reverse (5271), we get a palindrome (6996).

The spelling of 1725 in words is "one thousand, seven hundred twenty-five".

Divisors: 1 3 5 15 23 25 69 75 115 345 575 1725