19789455625 has 45 divisors (see below), whose sum is σ = 26348714931. Its totient is φ = 14855280000.

The previous prime is 19789455613. The next prime is 19789455671. The reversal of 19789455625 is 52655498791.

The square root of 19789455625 is 140675.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 9664266249 + 10125189376 = 98307^2 + 100624^2 .

It is not a de Polignac number, because 19789455625 - 2¹⁷ = 19789324553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 59786710 + ... + 59787040.

Almost surely, 2^19789455625 is an apocalyptic number.

19789455625 is the 140675-th square number.

19789455625 is the 70338-th centered octagonal number.

It is an amenable number.

19789455625 is a deficient number, since it is larger than the sum of its proper divisors (6559259306).

19789455625 is an frugal number, since it uses more digits than its factorization.

19789455625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 353 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 61.

The spelling of 19789455625 in words is "nineteen billion, seven hundred eighty-nine million, four hundred fifty-five thousand, six hundred twenty-five".