425881663 has 2 divisors, whose sum is σ = 425881664. Its totient is φ = 425881662.

The previous prime is 425881661. The next prime is 425881667. The reversal of 425881663 is 366188524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425881663 - 2¹ = 425881661 is a prime.

Together with 425881661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425881661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212940831 + 212940832.

It is an arithmetic number, because the mean of its divisors is an integer number (212940832).

Almost surely, 2^425881663 is an apocalyptic number.

425881663 is a deficient number, since it is larger than the sum of its proper divisors (1).

425881663 is an equidigital number, since it uses as much as digits as its factorization.

425881663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 43.

The square root of 425881663 is about 20636.9005182464. The cubic root of 425881663 is about 752.3668417048.

The spelling of 425881663 in words is "four hundred twenty-five million, eight hundred eighty-one thousand, six hundred sixty-three".