42245143525 has 12 divisors (see below), whose sum is σ = 56413515172. Its totient is φ = 31196413440.

The previous prime is 42245143489. The next prime is 42245143553. The reversal of 42245143525 is 52534154224.

It can be written as a sum of positive squares in 6 ways, for example, as 26811684 + 42218331841 = 5178^2 + 205471^2 .

It is not a de Polignac number, because 42245143525 - 2⁷ = 42245143397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64992204 + ... + 64992853.

Almost surely, 2^42245143525 is an apocalyptic number.

It is an amenable number.

42245143525 is a deficient number, since it is larger than the sum of its proper divisors (14168371647).

42245143525 is a wasteful number, since it uses less digits than its factorization.

42245143525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129985080 (or 129985075 counting only the distinct ones).

The product of its digits is 192000, while the sum is 37.

Adding to 42245143525 its reverse (52534154224), we get a palindrome (94779297749).

The spelling of 42245143525 in words is "forty-two billion, two hundred forty-five million, one hundred forty-three thousand, five hundred twenty-five".