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16725 = 352223
BaseRepresentation
bin100000101010101
3211221110
410011111
51013400
6205233
766522
oct40525
924843
1016725
1111625
129819
1377c7
146149
154e50
hex4155

16725 has 12 divisors (see below), whose sum is σ = 27776. Its totient is φ = 8880.

The previous prime is 16703. The next prime is 16729. The reversal of 16725 is 52761.

It is not a de Polignac number, because 16725 - 25 = 16693 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

16725 is a lucky number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16729) 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, 37 + ... + 186.

216725 is an apocalyptic number.

16725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16725 is the 75-th octagonal number.

It is an amenable number.

16725 is a deficient number, since it is larger than the sum of its proper divisors (11051).

16725 is a wasteful number, since it uses less digits than its factorization.

16725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 231 counting only the distinct ones).

The product of its digits is 420, while the sum is 21.

The square root of 16725 is about 129.3251715638. The cubic root of 16725 is about 25.5734139685.

It can be divided in two parts, 16 and 725, that added together give a triangular number (741 = T38).

The spelling of 16725 in words is "sixteen thousand, seven hundred twenty-five".

Divisors: 1 3 5 15 25 75 223 669 1115 3345 5575 16725