42861861825 has 24 divisors (see below), whose sum is σ = 71422952448. Its totient is φ = 22679657280.

The previous prime is 42861861799. The next prime is 42861861841. The reversal of 42861861825 is 52816816824.

42861861825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42861861825 - 2⁹ = 42861861313 is a prime.

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, 2240442 + ... + 2259491.

It is an arithmetic number, because the mean of its divisors is an integer number (2975956352).

Almost surely, 2^42861861825 is an apocalyptic number.

It is an amenable number.

42861861825 is a deficient number, since it is larger than the sum of its proper divisors (28561090623).

42861861825 is a wasteful number, since it uses less digits than its factorization.

42861861825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500073 (or 4500068 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 51.

The spelling of 42861861825 in words is "forty-two billion, eight hundred sixty-one million, eight hundred sixty-one thousand, eight hundred twenty-five".