19789725 has 12 divisors (see below), whose sum is σ = 32719136. Its totient is φ = 10554480.

The previous prime is 19789691. The next prime is 19789727. The reversal of 19789725 is 52798791.

It is not a de Polignac number, because 19789725 - 2⁹ = 19789213 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 (19789727) 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 11 ways as a sum of consecutive naturals, for example, 131857 + ... + 132006.

Almost surely, 2^19789725 is an apocalyptic number.

19789725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19789725 is a deficient number, since it is larger than the sum of its proper divisors (12929411).

19789725 is a wasteful number, since it uses less digits than its factorization.

19789725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263876 (or 263871 counting only the distinct ones).

The product of its digits is 317520, while the sum is 48.

The square root of 19789725 is about 4448.5643751664. The cubic root of 19789725 is about 270.4871178989.

The spelling of 19789725 in words is "nineteen million, seven hundred eighty-nine thousand, seven hundred twenty-five".