42181725885 has 64 divisors (see below), whose sum is σ = 75088527360. Its totient is φ = 20080016640.

The previous prime is 42181725877. The next prime is 42181725893. The reversal of 42181725885 is 58852718124.

It is an interprime number because it is at equal distance from previous prime (42181725877) and next prime (42181725893).

It is not a de Polignac number, because 42181725885 - 2³ = 42181725877 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 10631172 + ... + 10635138.

It is an arithmetic number, because the mean of its divisors is an integer number (1173258240).

Almost surely, 2^42181725885 is an apocalyptic number.

It is an amenable number.

42181725885 is a deficient number, since it is larger than the sum of its proper divisors (32906801475).

42181725885 is a wasteful number, since it uses less digits than its factorization.

42181725885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5778.

The product of its digits is 1433600, while the sum is 51.

The spelling of 42181725885 in words is "forty-two billion, one hundred eighty-one million, seven hundred twenty-five thousand, eight hundred eighty-five".