42878275077825 has 72 divisors (see below), whose sum is σ = 83784010664640. Its totient is φ = 20788856323200.

The previous prime is 42878275077761. The next prime is 42878275077871. The reversal of 42878275077825 is 52877057287824.

42878275077825 is a `hidden beast` number, since 4 + 2 + 8 + 7 + 8 + 27 + 507 + 78 + 25 = 666.

It is not a de Polignac number, because 42878275077825 - 2⁶ = 42878275077761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 90618804 + ... + 91090746.

Almost surely, 2^{42878275077825} is an apocalyptic number.

42878275077825 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42878275077825 is a deficient number, since it is larger than the sum of its proper divisors (40905735586815).

42878275077825 is a wasteful number, since it uses less digits than its factorization.

42878275077825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508679 (or 508671 counting only the distinct ones).

The product of its (nonzero) digits is 983449600, while the sum is 72.

The spelling of 42878275077825 in words is "forty-two trillion, eight hundred seventy-eight billion, two hundred seventy-five million, seventy-seven thousand, eight hundred twenty-five".