425705871 has 4 divisors (see below), whose sum is σ = 567607832. Its totient is φ = 283803912.

The previous prime is 425705869. The next prime is 425705897. The reversal of 425705871 is 178507524.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 425705871 - 2¹ = 425705869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425705801) 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 in 3 ways as a sum of consecutive naturals, for example, 70950976 + ... + 70950981.

It is an arithmetic number, because the mean of its divisors is an integer number (141901958).

Almost surely, 2^425705871 is an apocalyptic number.

425705871 is a deficient number, since it is larger than the sum of its proper divisors (141901961).

425705871 is a wasteful number, since it uses less digits than its factorization.

425705871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141901960.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 425705871 is about 20632.6409119143. The cubic root of 425705871 is about 752.2633088182.

The spelling of 425705871 in words is "four hundred twenty-five million, seven hundred five thousand, eight hundred seventy-one".