42664435125 has 64 divisors (see below), whose sum is σ = 76535886336. Its totient is φ = 20981721600.

The previous prime is 42664435123. The next prime is 42664435129. The reversal of 42664435125 is 52153446624.

It is a happy number.

It is not a de Polignac number, because 42664435125 - 2¹ = 42664435123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42664435123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5178009 + ... + 5186241.

It is an arithmetic number, because the mean of its divisors is an integer number (1195873224).

Almost surely, 2^42664435125 is an apocalyptic number.

It is an amenable number.

42664435125 is a deficient number, since it is larger than the sum of its proper divisors (33871451211).

42664435125 is a wasteful number, since it uses less digits than its factorization.

42664435125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9327 (or 9317 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

The spelling of 42664435125 in words is "forty-two billion, six hundred sixty-four million, four hundred thirty-five thousand, one hundred twenty-five".