542800018825 has 6 divisors (see below), whose sum is σ = 673072023374. Its totient is φ = 434240015040.

The previous prime is 542800018819. The next prime is 542800018847. The reversal of 542800018825 is 528810008245.

It can be written as a sum of positive squares in 3 ways, for example, as 18114198921 + 524685819904 = 134589^2 + 724352^2 .

It is not a de Polignac number, because 542800018825 - 2²³ = 542791630217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 10856000352 + ... + 10856000401.

Almost surely, 2^542800018825 is an apocalyptic number.

It is an amenable number.

542800018825 is a deficient number, since it is larger than the sum of its proper divisors (130272004549).

542800018825 is a wasteful number, since it uses less digits than its factorization.

542800018825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21712000763 (or 21712000758 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 43.

The spelling of 542800018825 in words is "five hundred forty-two billion, eight hundred million, eighteen thousand, eight hundred twenty-five".