16819904625 has 16 divisors (see below), whose sum is σ = 27988321920. Its totient is φ = 8970615600.

The previous prime is 16819904579. The next prime is 16819904627. The reversal of 16819904625 is 52640991861.

16819904625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16819904625 - 2⁸ = 16819904369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16819904627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22426165 + ... + 22426914.

It is an arithmetic number, because the mean of its divisors is an integer number (1749270120).

Almost surely, 2^16819904625 is an apocalyptic number.

16819904625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16819904625 is a deficient number, since it is larger than the sum of its proper divisors (11168417295).

16819904625 is an equidigital number, since it uses as much as digits as its factorization.

16819904625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44853097 (or 44853087 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 16819904625 in words is "sixteen billion, eight hundred nineteen million, nine hundred four thousand, six hundred twenty-five".