42288725321 has 2 divisors, whose sum is σ = 42288725322. Its totient is φ = 42288725320.

The previous prime is 42288725273. The next prime is 42288725333. The reversal of 42288725321 is 12352788224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41673139600 + 615585721 = 204140^2 + 24811^2 .

It is a cyclic number.

It is not a de Polignac number, because 42288725321 - 2¹⁸ = 42288463177 is a prime.

It is not a weakly prime, because it can be changed into another prime (42288724321) by changing a digit.

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 as a sum of consecutive naturals, namely, 21144362660 + 21144362661.

It is an arithmetic number, because the mean of its divisors is an integer number (21144362661).

Almost surely, 2^42288725321 is an apocalyptic number.

It is an amenable number.

42288725321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42288725321 is an equidigital number, since it uses as much as digits as its factorization.

42288725321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 430080, while the sum is 44.

The spelling of 42288725321 in words is "forty-two billion, two hundred eighty-eight million, seven hundred twenty-five thousand, three hundred twenty-one".