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16225 = 521159
BaseRepresentation
bin11111101100001
3211020221
43331201
51004400
6203041
765206
oct37541
924227
1016225
1111210
129481
137501
145cad
154c1a
hex3f61

16225 has 12 divisors (see below), whose sum is σ = 22320. Its totient is φ = 11600.

The previous prime is 16223. The next prime is 16229. The reversal of 16225 is 52261.

Adding to 16225 its reverse (52261), we get a palindrome (68486).

It can be divided in two parts, 16 and 225, that multiplied together give a square (3600 = 602).

It is a happy number.

It is not a de Polignac number, because 16225 - 21 = 16223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16199 and 16208.

It is not an unprimeable number, because it can be changed into a prime (16223) 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, 246 + ... + 304.

It is an arithmetic number, because the mean of its divisors is an integer number (1860).

16225 is a Friedman number, since it can be written as 52^2*6+1, using all its digits and the basic arithmetic operations.

216225 is an apocalyptic number.

It is an amenable number.

16225 is a deficient number, since it is larger than the sum of its proper divisors (6095).

16225 is a wasteful number, since it uses less digits than its factorization.

16225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 75 counting only the distinct ones).

The product of its digits is 120, while the sum is 16.

The square root of 16225 is about 127.3773920286. The cubic root of 16225 is about 25.3159892055.

The spelling of 16225 in words is "sixteen thousand, two hundred twenty-five".

Divisors: 1 5 11 25 55 59 275 295 649 1475 3245 16225