19789770925 has 12 divisors (see below), whose sum is σ = 24834972960. Its totient is φ = 15641070320.

The previous prime is 19789770893. The next prime is 19789770977. The reversal of 19789770925 is 52907798791.

It is not a de Polignac number, because 19789770925 - 2⁵ = 19789770893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4766545 + ... + 4770694.

It is an arithmetic number, because the mean of its divisors is an integer number (2069581080).

Almost surely, 2^19789770925 is an apocalyptic number.

It is an amenable number.

19789770925 is a deficient number, since it is larger than the sum of its proper divisors (5045202035).

19789770925 is an equidigital number, since it uses as much as digits as its factorization.

19789770925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9537332 (or 9537327 counting only the distinct ones).

The product of its (nonzero) digits is 20003760, while the sum is 64.

The spelling of 19789770925 in words is "nineteen billion, seven hundred eighty-nine million, seven hundred seventy thousand, nine hundred twenty-five".