19425579485 has 8 divisors (see below), whose sum is σ = 25103825880. Its totient is φ = 14345043264.

The previous prime is 19425579473. The next prime is 19425579491. The reversal of 19425579485 is 58497552491.

It can be written as a sum of positive squares in 4 ways, for example, as 1062890404 + 18362689081 = 32602^2 + 135509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19425579485 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149427470 + ... + 149427599.

It is an arithmetic number, because the mean of its divisors is an integer number (3137978235).

Almost surely, 2^19425579485 is an apocalyptic number.

It is an amenable number.

19425579485 is a deficient number, since it is larger than the sum of its proper divisors (5678246395).

19425579485 is a wasteful number, since it uses less digits than its factorization.

19425579485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298855087.

The product of its digits is 18144000, while the sum is 59.

The spelling of 19425579485 in words is "nineteen billion, four hundred twenty-five million, five hundred seventy-nine thousand, four hundred eighty-five".