42025662505 has 4 divisors (see below), whose sum is σ = 50430795012. Its totient is φ = 33620530000.

The previous prime is 42025662499. The next prime is 42025662589. The reversal of 42025662505 is 50526652024.

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 23657823721 + 18367838784 = 153811^2 + 135528^2 .

It is not a de Polignac number, because 42025662505 - 2⁵ = 42025662473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4202566246 + ... + 4202566255.

It is an arithmetic number, because the mean of its divisors is an integer number (12607698753).

Almost surely, 2^42025662505 is an apocalyptic number.

It is an amenable number.

42025662505 is a deficient number, since it is larger than the sum of its proper divisors (8405132507).

42025662505 is an equidigital number, since it uses as much as digits as its factorization.

42025662505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8405132506.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 42025662505 in words is "forty-two billion, twenty-five million, six hundred sixty-two thousand, five hundred five".