42165560525 has 24 divisors (see below), whose sum is σ = 57202068000. Its totient is φ = 30577924800.

The previous prime is 42165560519. The next prime is 42165560557. The reversal of 42165560525 is 52506556124.

It is not a de Polignac number, because 42165560525 - 2¹⁶ = 42165494989 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 (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123695 + ... + 315644.

It is an arithmetic number, because the mean of its divisors is an integer number (2383419500).

Almost surely, 2^42165560525 is an apocalyptic number.

It is an amenable number.

42165560525 is a deficient number, since it is larger than the sum of its proper divisors (15036507475).

42165560525 is a wasteful number, since it uses less digits than its factorization.

42165560525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439709 (or 439704 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 42165560525 in words is "forty-two billion, one hundred sixty-five million, five hundred sixty thousand, five hundred twenty-five".