42525161605 has 4 divisors (see below), whose sum is σ = 51030193932. Its totient is φ = 34020129280.

The previous prime is 42525161593. The next prime is 42525161663. The reversal of 42525161605 is 50616152524.

42525161605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9859298436 + 32665863169 = 99294^2 + 180737^2 .

It is not a de Polignac number, because 42525161605 - 2⁷ = 42525161477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4252516156 + ... + 4252516165.

It is an arithmetic number, because the mean of its divisors is an integer number (12757548483).

Almost surely, 2^42525161605 is an apocalyptic number.

It is an amenable number.

42525161605 is a deficient number, since it is larger than the sum of its proper divisors (8505032327).

42525161605 is an equidigital number, since it uses as much as digits as its factorization.

42525161605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8505032326.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 42525161605 in words is "forty-two billion, five hundred twenty-five million, one hundred sixty-one thousand, six hundred five".