42521140525 has 12 divisors (see below), whose sum is σ = 54544360500. Its totient is φ = 32843914880.

The previous prime is 42521140517. The next prime is 42521140547. The reversal of 42521140525 is 52504112524.

It can be written as a sum of positive squares in 6 ways, for example, as 92968164 + 42428172361 = 9642^2 + 205981^2 .

It is not a de Polignac number, because 42521140525 - 2³ = 42521140517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29324200 + ... + 29325649.

It is an arithmetic number, because the mean of its divisors is an integer number (4545363375).

Almost surely, 2^42521140525 is an apocalyptic number.

It is an amenable number.

42521140525 is a deficient number, since it is larger than the sum of its proper divisors (12023219975).

42521140525 is a wasteful number, since it uses less digits than its factorization.

42521140525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58649888 (or 58649883 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 42521140525 in words is "forty-two billion, five hundred twenty-one million, one hundred forty thousand, five hundred twenty-five".