16004125 has 8 divisors (see below), whose sum is σ = 19973304. Its totient is φ = 12803200.

The previous prime is 16004119. The next prime is 16004129. The reversal of 16004125 is 52140061.

16004125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 840889 + 15163236 = 917^2 + 3894^2 .

It is not a de Polignac number, because 16004125 - 2⁷ = 16003997 is a prime.

It is a super-2 number, since 2×16004125² = 512264034031250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16004129) 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, 63892 + ... + 64141.

It is an arithmetic number, because the mean of its divisors is an integer number (2496663).

Almost surely, 2^16004125 is an apocalyptic number.

It is an amenable number.

16004125 is a deficient number, since it is larger than the sum of its proper divisors (3969179).

16004125 is an equidigital number, since it uses as much as digits as its factorization.

16004125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128048 (or 128038 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 16004125 is about 4000.5155917706. The cubic root of 16004125 is about 252.0058630113.

Adding to 16004125 its reverse (52140061), we get a palindrome (68144186).

It can be divided in two parts, 16004 and 125, that added together give a square (16129 = 127²).

The spelling of 16004125 in words is "sixteen million, four thousand, one hundred twenty-five".