16125229 has 4 divisors (see below), whose sum is σ = 16561084. Its totient is φ = 15689376.

The previous prime is 16125223. The next prime is 16125233. The reversal of 16125229 is 92252161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92252161 = 29 ⋅3181109.

It can be written as a sum of positive squares in 2 ways, for example, as 12264004 + 3861225 = 3502^2 + 1965^2 .

It is a cyclic number.

It is not a de Polignac number, because 16125229 - 2¹⁷ = 15994157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16125197 and 16125206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16125223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217872 + ... + 217945.

It is an arithmetic number, because the mean of its divisors is an integer number (4140271).

Almost surely, 2^16125229 is an apocalyptic number.

It is an amenable number.

16125229 is a deficient number, since it is larger than the sum of its proper divisors (435855).

16125229 is an equidigital number, since it uses as much as digits as its factorization.

16125229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435854.

The product of its digits is 2160, while the sum is 28.

The square root of 16125229 is about 4015.6231147855. The cubic root of 16125229 is about 252.6399133086.

The spelling of 16125229 in words is "sixteen million, one hundred twenty-five thousand, two hundred twenty-nine".