42688581825 has 24 divisors (see below), whose sum is σ = 70600516000. Its totient is φ = 22760127360.

The previous prime is 42688581823. The next prime is 42688581857. The reversal of 42688581825 is 52818588624.

It is a happy number.

It is not a de Polignac number, because 42688581825 - 2¹ = 42688581823 is a prime.

It is a super-3 number, since 3×42688581825³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42688581821) 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 23 ways as a sum of consecutive naturals, for example, 157101 + ... + 331749.

Almost surely, 2^42688581825 is an apocalyptic number.

It is an amenable number.

42688581825 is a deficient number, since it is larger than the sum of its proper divisors (27911934175).

42688581825 is a wasteful number, since it uses less digits than its factorization.

42688581825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177921 (or 177916 counting only the distinct ones).

The product of its digits is 9830400, while the sum is 57.

The spelling of 42688581825 in words is "forty-two billion, six hundred eighty-eight million, five hundred eighty-one thousand, eight hundred twenty-five".