19873715425 has 12 divisors (see below), whose sum is σ = 24645386880. Its totient is φ = 15897695120.

The previous prime is 19873715413. The next prime is 19873715429. The reversal of 19873715425 is 52451737891.

It is not a de Polignac number, because 19873715425 - 2²⁷ = 19739497697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19873715429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400116 + ... + 447034.

It is an arithmetic number, because the mean of its divisors is an integer number (2053782240).

Almost surely, 2^19873715425 is an apocalyptic number.

It is an amenable number.

19873715425 is a deficient number, since it is larger than the sum of its proper divisors (4771671455).

19873715425 is a wasteful number, since it uses less digits than its factorization.

19873715425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63872 (or 63867 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 52.

The spelling of 19873715425 in words is "nineteen billion, eight hundred seventy-three million, seven hundred fifteen thousand, four hundred twenty-five".