425978957171 has 2 divisors, whose sum is σ = 425978957172. Its totient is φ = 425978957170.

The previous prime is 425978957167. The next prime is 425978957179. The reversal of 425978957171 is 171759879524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425978957171 - 2² = 425978957167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 425978957098 and 425978957107.

It is not a weakly prime, because it can be changed into another prime (425978957179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212989478585 + 212989478586.

It is an arithmetic number, because the mean of its divisors is an integer number (212989478586).

Almost surely, 2^425978957171 is an apocalyptic number.

425978957171 is a deficient number, since it is larger than the sum of its proper divisors (1).

425978957171 is an equidigital number, since it uses as much as digits as its factorization.

425978957171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44452800, while the sum is 65.

The spelling of 425978957171 in words is "four hundred twenty-five billion, nine hundred seventy-eight million, nine hundred fifty-seven thousand, one hundred seventy-one".