16319925 has 18 divisors (see below), whose sum is σ = 29231202. Its totient is φ = 8703840.

The previous prime is 16319911. The next prime is 16319969. The reversal of 16319925 is 52991361.

It can be written as a sum of positive squares in 3 ways, for example, as 2792241 + 13527684 = 1671^2 + 3678^2 .

It is not a de Polignac number, because 16319925 - 2⁴ = 16319909 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16319925.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 36042 + ... + 36491.

Almost surely, 2^16319925 is an apocalyptic number.

16319925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16319925 is a deficient number, since it is larger than the sum of its proper divisors (12911277).

16319925 is a wasteful number, since it uses less digits than its factorization.

16319925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72549 (or 72541 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 16319925 is about 4039.7926927010. The cubic root of 16319925 is about 253.6526396532.

The spelling of 16319925 in words is "sixteen million, three hundred nineteen thousand, nine hundred twenty-five".