42540044525 has 24 divisors (see below), whose sum is σ = 57612544704. Its totient is φ = 30901942400.

The previous prime is 42540044483. The next prime is 42540044539. The reversal of 42540044525 is 52544004524.

It is not a de Polignac number, because 42540044525 - 2⁸ = 42540044269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145424 + ... + 325926.

It is an arithmetic number, because the mean of its divisors is an integer number (2400522696).

Almost surely, 2^42540044525 is an apocalyptic number.

It is an amenable number.

42540044525 is a deficient number, since it is larger than the sum of its proper divisors (15072500179).

42540044525 is a wasteful number, since it uses less digits than its factorization.

42540044525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181381 (or 181376 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 35.

The spelling of 42540044525 in words is "forty-two billion, five hundred forty million, forty-four thousand, five hundred twenty-five".