425645206645987 has 2 divisors, whose sum is σ = 425645206645988. Its totient is φ = 425645206645986.

The previous prime is 425645206645973. The next prime is 425645206646053. The reversal of 425645206645987 is 789546602546524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425645206645987 - 2⁷ = 425645206645859 is a prime.

It is not a weakly prime, because it can be changed into another prime (425645206045987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212822603322993 + 212822603322994.

It is an arithmetic number, because the mean of its divisors is an integer number (212822603322994).

Almost surely, 2^{425645206645987} is an apocalyptic number.

425645206645987 is a deficient number, since it is larger than the sum of its proper divisors (1).

425645206645987 is an equidigital number, since it uses as much as digits as its factorization.

425645206645987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648000, while the sum is 73.

The spelling of 425645206645987 in words is "four hundred twenty-five trillion, six hundred forty-five billion, two hundred six million, six hundred forty-five thousand, nine hundred eighty-seven".