425746855409 has 2 divisors, whose sum is σ = 425746855410. Its totient is φ = 425746855408.

The previous prime is 425746855333. The next prime is 425746855447. The reversal of 425746855409 is 904558647524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417998454784 + 7748400625 = 646528^2 + 88025^2 .

It is a cyclic number.

It is not a de Polignac number, because 425746855409 - 2¹⁶ = 425746789873 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (425746855309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212873427704 + 212873427705.

It is an arithmetic number, because the mean of its divisors is an integer number (212873427705).

Almost surely, 2^425746855409 is an apocalyptic number.

It is an amenable number.

425746855409 is a deficient number, since it is larger than the sum of its proper divisors (1).

425746855409 is an equidigital number, since it uses as much as digits as its factorization.

425746855409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384000, while the sum is 59.

The spelling of 425746855409 in words is "four hundred twenty-five billion, seven hundred forty-six million, eight hundred fifty-five thousand, four hundred nine".