425430734987 has 2 divisors, whose sum is σ = 425430734988. Its totient is φ = 425430734986.

The previous prime is 425430734959. The next prime is 425430735019. The reversal of 425430734987 is 789437034524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425430734987 - 2¹⁸ = 425430472843 is a prime.

It is not a weakly prime, because it can be changed into another prime (425430704987) 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, 212715367493 + 212715367494.

It is an arithmetic number, because the mean of its divisors is an integer number (212715367494).

Almost surely, 2^425430734987 is an apocalyptic number.

425430734987 is a deficient number, since it is larger than the sum of its proper divisors (1).

425430734987 is an equidigital number, since it uses as much as digits as its factorization.

425430734987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 56.

The spelling of 425430734987 in words is "four hundred twenty-five billion, four hundred thirty million, seven hundred thirty-four thousand, nine hundred eighty-seven".