42878126925 has 24 divisors (see below), whose sum is σ = 78768708480. Its totient is φ = 22868334000.

The previous prime is 42878126909. The next prime is 42878126927. The reversal of 42878126925 is 52962187824.

42878126925 is a `hidden beast` number, since 4 + 287 + 81 + 269 + 25 = 666.

It is not a de Polignac number, because 42878126925 - 2⁴ = 42878126909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42878126927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31760901 + ... + 31762250.

It is an arithmetic number, because the mean of its divisors is an integer number (3282029520).

Almost surely, 2^42878126925 is an apocalyptic number.

42878126925 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42878126925 is a deficient number, since it is larger than the sum of its proper divisors (35890581555).

42878126925 is a wasteful number, since it uses less digits than its factorization.

42878126925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63523170 (or 63523159 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 42878126925 in words is "forty-two billion, eight hundred seventy-eight million, one hundred twenty-six thousand, nine hundred twenty-five".