16404125 has 16 divisors (see below), whose sum is σ = 21552960. Its totient is φ = 12430800.

The previous prime is 16404109. The next prime is 16404127. The reversal of 16404125 is 52140461.

16404125 = T₂₃₀ + T₂₃₁ + ... + T₄₇₉.

It is not a de Polignac number, because 16404125 - 2⁴ = 16404109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16404125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16404127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1079 + ... + 5828.

It is an arithmetic number, because the mean of its divisors is an integer number (1347060).

Almost surely, 2^16404125 is an apocalyptic number.

It is an amenable number.

16404125 is a deficient number, since it is larger than the sum of its proper divisors (5148835).

16404125 is an equidigital number, since it uses as much as digits as its factorization.

16404125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6941 (or 6931 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 16404125 is about 4050.2006123154. The cubic root of 16404125 is about 254.0881181027.

Adding to 16404125 its reverse (52140461), we get a palindrome (68544586).

The spelling of 16404125 in words is "sixteen million, four hundred four thousand, one hundred twenty-five".