425036488781 has 2 divisors, whose sum is σ = 425036488782. Its totient is φ = 425036488780.

The previous prime is 425036488777. The next prime is 425036488819. The reversal of 425036488781 is 187884630524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406617927556 + 18418561225 = 637666^2 + 135715^2 .

It is a cyclic number.

It is not a de Polignac number, because 425036488781 - 2² = 425036488777 is a prime.

It is a super-2 number, since 2×425036488781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425036488741) 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 as a sum of consecutive naturals, namely, 212518244390 + 212518244391.

It is an arithmetic number, because the mean of its divisors is an integer number (212518244391).

Almost surely, 2^425036488781 is an apocalyptic number.

It is an amenable number.

425036488781 is a deficient number, since it is larger than the sum of its proper divisors (1).

425036488781 is an equidigital number, since it uses as much as digits as its factorization.

425036488781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 425036488781 in words is "four hundred twenty-five billion, thirty-six million, four hundred eighty-eight thousand, seven hundred eighty-one".