425156671 has 2 divisors, whose sum is σ = 425156672. Its totient is φ = 425156670.

The previous prime is 425156663. The next prime is 425156759. The reversal of 425156671 is 176651524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425156671 - 2³ = 425156663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425156671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425156371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212578335 + 212578336.

It is an arithmetic number, because the mean of its divisors is an integer number (212578336).

Almost surely, 2^425156671 is an apocalyptic number.

425156671 is a deficient number, since it is larger than the sum of its proper divisors (1).

425156671 is an equidigital number, since it uses as much as digits as its factorization.

425156671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 425156671 is about 20619.3276078538. The cubic root of 425156671 is about 751.9396731587.

The spelling of 425156671 in words is "four hundred twenty-five million, one hundred fifty-six thousand, six hundred seventy-one".