16125999 has 8 divisors (see below), whose sum is σ = 21743280. Its totient is φ = 10629696.

The previous prime is 16125971. The next prime is 16126037. The reversal of 16125999 is 99952161.

It is a happy number.

16125999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16125999 - 2²⁰ = 15077423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16125999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16125199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29932 + ... + 30465.

It is an arithmetic number, because the mean of its divisors is an integer number (2717910).

Almost surely, 2^16125999 is an apocalyptic number.

16125999 is a deficient number, since it is larger than the sum of its proper divisors (5617281).

16125999 is an equidigital number, since it uses as much as digits as its factorization.

16125999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60489.

The product of its digits is 43740, while the sum is 42.

The square root of 16125999 is about 4015.7189891724. The cubic root of 16125999 is about 252.6439345360.

The spelling of 16125999 in words is "sixteen million, one hundred twenty-five thousand, nine hundred ninety-nine".