19789374675625 has 45 divisors (see below), whose sum is σ = 24977092100961. Its totient is φ = 15674110926000.

The previous prime is 19789374675599. The next prime is 19789374675661. The reversal of 19789374675625 is 52657647398791.

The square root of 19789374675625 is 4448525.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1551486974569 + 18237887701056 = 1245587^2 + 4270584^2 .

It is not a de Polignac number, because 19789374675625 - 2¹⁵ = 19789374642857 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, 11899803544 + ... + 11899805206.

Almost surely, 2^{19789374675625} is an apocalyptic number.

19789374675625 is the 4448525-th square number.

19789374675625 is the 2224263-rd centered octagonal number.

It is an amenable number.

19789374675625 is a deficient number, since it is larger than the sum of its proper divisors (5187717425336).

19789374675625 is an frugal number, since it uses more digits than its factorization.

19789374675625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560 (or 1775 counting only the distinct ones).

The product of its digits is 4800902400, while the sum is 79.

The spelling of 19789374675625 in words is "nineteen trillion, seven hundred eighty-nine billion, three hundred seventy-four million, six hundred seventy-five thousand, six hundred twenty-five".