19803125 has 12 divisors (see below), whose sum is σ = 24756228. Its totient is φ = 15840000.

The previous prime is 19803109. The next prime is 19803127. The reversal of 19803125 is 52130891.

It can be written as a sum of positive squares in 6 ways, for example, as 17422276 + 2380849 = 4174^2 + 1543^2 .

It is not a de Polignac number, because 19803125 - 2⁴ = 19803109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19803127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44 + ... + 6293.

It is an arithmetic number, because the mean of its divisors is an integer number (2063019).

Almost surely, 2^19803125 is an apocalyptic number.

It is an amenable number.

19803125 is a deficient number, since it is larger than the sum of its proper divisors (4953103).

19803125 is an frugal number, since it uses more digits than its factorization.

19803125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6362 (or 6342 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 19803125 is about 4450.0702241650. The cubic root of 19803125 is about 270.5481547857.

The spelling of 19803125 in words is "nineteen million, eight hundred three thousand, one hundred twenty-five".