42400088425 has 6 divisors (see below), whose sum is σ = 52576109678. Its totient is φ = 33920070720.

The previous prime is 42400088389. The next prime is 42400088477. The reversal of 42400088425 is 52488000424.

It can be written as a sum of positive squares in 3 ways, for example, as 1364268096 + 41035820329 = 36936^2 + 202573^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42400088425 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 (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 848001744 + ... + 848001793.

Almost surely, 2^42400088425 is an apocalyptic number.

It is an amenable number.

42400088425 is a deficient number, since it is larger than the sum of its proper divisors (10176021253).

42400088425 is a wasteful number, since it uses less digits than its factorization.

42400088425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696003547 (or 1696003542 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 37.

Adding to 42400088425 its reverse (52488000424), we get a palindrome (94888088849).

The spelling of 42400088425 in words is "forty-two billion, four hundred million, eighty-eight thousand, four hundred twenty-five".