42105531525 has 12 divisors (see below), whose sum is σ = 69614478912. Its totient is φ = 22456283440.

The previous prime is 42105531511. The next prime is 42105531529. The reversal of 42105531525 is 52513550124.

It is not a de Polignac number, because 42105531525 - 2¹³ = 42105523333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42105531529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280703469 + ... + 280703618.

It is an arithmetic number, because the mean of its divisors is an integer number (5801206576).

Almost surely, 2^42105531525 is an apocalyptic number.

It is an amenable number.

42105531525 is a deficient number, since it is larger than the sum of its proper divisors (27508947387).

42105531525 is a wasteful number, since it uses less digits than its factorization.

42105531525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561407100 (or 561407095 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 42105531525 in words is "forty-two billion, one hundred five million, five hundred thirty-one thousand, five hundred twenty-five".