42457475425 has 6 divisors (see below), whose sum is σ = 52647269558. Its totient is φ = 33965980320.

The previous prime is 42457475399. The next prime is 42457475429. The reversal of 42457475425 is 52457475424.

It can be written as a sum of positive squares in 3 ways, for example, as 324576256 + 42132899169 = 18016^2 + 205263^2 .

It is not a de Polignac number, because 42457475425 - 2¹⁹ = 42456951137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42457475429) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 849149484 + ... + 849149533.

Almost surely, 2^42457475425 is an apocalyptic number.

It is an amenable number.

42457475425 is a deficient number, since it is larger than the sum of its proper divisors (10189794133).

42457475425 is a wasteful number, since it uses less digits than its factorization.

42457475425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698299027 (or 1698299022 counting only the distinct ones).

The product of its digits is 6272000, while the sum is 49.

Subtracting 42457475425 from its reverse (52457475424), we obtain a palindrome (9999999999).

The spelling of 42457475425 in words is "forty-two billion, four hundred fifty-seven million, four hundred seventy-five thousand, four hundred twenty-five".