16125685 has 4 divisors (see below), whose sum is σ = 19350828. Its totient is φ = 12900544.

The previous prime is 16125671. The next prime is 16125689. The reversal of 16125685 is 58652161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58652161 = 1009 ⋅58129.

It can be written as a sum of positive squares in 2 ways, for example, as 3896676 + 12229009 = 1974^2 + 3497^2 .

It is a cyclic number.

It is not a de Polignac number, because 16125685 - 2⁹ = 16125173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16125685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16125689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612564 + ... + 1612573.

It is an arithmetic number, because the mean of its divisors is an integer number (4837707).

Almost surely, 2^16125685 is an apocalyptic number.

It is an amenable number.

16125685 is a deficient number, since it is larger than the sum of its proper divisors (3225143).

16125685 is an equidigital number, since it uses as much as digits as its factorization.

16125685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225142.

The product of its digits is 14400, while the sum is 34.

The square root of 16125685 is about 4015.6798926209. The cubic root of 16125685 is about 252.6422947262.

The spelling of 16125685 in words is "sixteen million, one hundred twenty-five thousand, six hundred eighty-five".