19523238425 has 6 divisors (see below), whose sum is σ = 24208815678. Its totient is φ = 15618590720.

The previous prime is 19523238421. The next prime is 19523238433. The reversal of 19523238425 is 52483232591.

It can be written as a sum of positive squares in 3 ways, for example, as 171924544 + 19351313881 = 13112^2 + 139109^2 .

It is not a de Polignac number, because 19523238425 - 2² = 19523238421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19523238421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 390464744 + ... + 390464793.

It is an arithmetic number, because the mean of its divisors is an integer number (4034802613).

Almost surely, 2^19523238425 is an apocalyptic number.

It is an amenable number.

19523238425 is a deficient number, since it is larger than the sum of its proper divisors (4685577253).

19523238425 is an equidigital number, since it uses as much as digits as its factorization.

19523238425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780929547 (or 780929542 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The spelling of 19523238425 in words is "nineteen billion, five hundred twenty-three million, two hundred thirty-eight thousand, four hundred twenty-five".