16872125 has 24 divisors (see below), whose sum is σ = 21852792. Its totient is φ = 13003200.

The previous prime is 16872101. The next prime is 16872127. The reversal of 16872125 is 52127861.

It can be written as a sum of positive squares in 4 ways, for example, as 534361 + 16337764 = 731^2 + 4042^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16872125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16872091 and 16872100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16872127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231089 + ... + 231161.

It is an arithmetic number, because the mean of its divisors is an integer number (910533).

Almost surely, 2^16872125 is an apocalyptic number.

It is an amenable number.

16872125 is a deficient number, since it is larger than the sum of its proper divisors (4980667).

16872125 is an frugal number, since it uses more digits than its factorization.

16872125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 121 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 16872125 is about 4107.5692325267. The cubic root of 16872125 is about 256.4818247124.

Adding to 16872125 its reverse (52127861), we get a palindrome (68999986).

The spelling of 16872125 in words is "sixteen million, eight hundred seventy-two thousand, one hundred twenty-five".