42858644685825 has 48 divisors (see below), whose sum is σ = 75364287376896. Its totient is φ = 21416886297600.

The previous prime is 42858644685797. The next prime is 42858644685827. The reversal of 42858644685825 is 52858644685824.

It is not a de Polignac number, because 42858644685825 - 2¹² = 42858644681729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is not an unprimeable number, because it can be changed into a prime (42858644685827) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75084786 + ... + 75653435.

It is an arithmetic number, because the mean of its divisors is an integer number (1570089320352).

Almost surely, 2^{42858644685825} is an apocalyptic number.

It is an amenable number.

42858644685825 is a deficient number, since it is larger than the sum of its proper divisors (32505642691071).

42858644685825 is a wasteful number, since it uses less digits than its factorization.

42858644685825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150738474 (or 150738469 counting only the distinct ones).

The product of its digits is 4718592000, while the sum is 75.

Subtracting 42858644685825 from its reverse (52858644685824), we obtain a palindrome (9999999999999).

The spelling of 42858644685825 in words is "forty-two trillion, eight hundred fifty-eight billion, six hundred forty-four million, six hundred eighty-five thousand, eight hundred twenty-five".