425806862171 has 2 divisors, whose sum is σ = 425806862172. Its totient is φ = 425806862170.

The previous prime is 425806862153. The next prime is 425806862189. The reversal of 425806862171 is 171268608524.

It is a balanced prime because it is at equal distance from previous prime (425806862153) and next prime (425806862189).

It is a cyclic number.

It is not a de Polignac number, because 425806862171 - 2²² = 425802667867 is a prime.

It is a super-2 number, since 2×425806862171² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425806862071) 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, 212903431085 + 212903431086.

It is an arithmetic number, because the mean of its divisors is an integer number (212903431086).

Almost surely, 2^425806862171 is an apocalyptic number.

425806862171 is a deficient number, since it is larger than the sum of its proper divisors (1).

425806862171 is an equidigital number, since it uses as much as digits as its factorization.

425806862171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 425806862171 in words is "four hundred twenty-five billion, eight hundred six million, eight hundred sixty-two thousand, one hundred seventy-one".