42878788740525 has 12 divisors (see below), whose sum is σ = 70892930717792. Its totient is φ = 22868687328240.

The previous prime is 42878788740521. The next prime is 42878788740637. The reversal of 42878788740525 is 52504788787824.

It is not a de Polignac number, because 42878788740525 - 2² = 42878788740521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75), and also a Moran number because the ratio is a prime number: 571717183207 = 42878788740525 / (4 + 2 + 8 + 7 + 8 + 7 + 8 + 8 + 7 + 4 + 0 + 5 + 2 + 5).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42878788740521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285858591529 + ... + 285858591678.

Almost surely, 2^{42878788740525} is an apocalyptic number.

It is an amenable number.

42878788740525 is a deficient number, since it is larger than the sum of its proper divisors (28014141977267).

42878788740525 is a wasteful number, since it uses less digits than its factorization.

42878788740525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571717183220 (or 571717183215 counting only the distinct ones).

The product of its (nonzero) digits is 2247884800, while the sum is 75.

The spelling of 42878788740525 in words is "forty-two trillion, eight hundred seventy-eight billion, seven hundred eighty-eight million, seven hundred forty thousand, five hundred twenty-five".