19231725425481 has 24 divisors (see below), whose sum is σ = 28304484344136. Its totient is φ = 12578712756480.

The previous prime is 19231725425477. The next prime is 19231725425557. The reversal of 19231725425481 is 18452452713291.

19231725425481 is a `hidden beast` number, since 1 + 9 + 2 + 3 + 17 + 2 + 542 + 5 + 4 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 209182743225 + 19022542682256 = 457365^2 + 4361484^2 .

It is not a de Polignac number, because 19231725425481 - 2² = 19231725425477 is a prime.

It is a super-2 number, since 2×19231725425481² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19231725423481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10669971 + ... + 12341463.

It is an arithmetic number, because the mean of its divisors is an integer number (1179353514339).

Almost surely, 2^{19231725425481} is an apocalyptic number.

It is an amenable number.

19231725425481 is a deficient number, since it is larger than the sum of its proper divisors (9072758918655).

19231725425481 is a wasteful number, since it uses less digits than its factorization.

19231725425481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695673 (or 1695670 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The spelling of 19231725425481 in words is "nineteen trillion, two hundred thirty-one billion, seven hundred twenty-five million, four hundred twenty-five thousand, four hundred eighty-one".