425630871 has 12 divisors (see below), whose sum is σ = 623460240. Its totient is φ = 279756960.

The previous prime is 425630861. The next prime is 425630903. The reversal of 425630871 is 178036524.

It is not a de Polignac number, because 425630871 - 2⁵ = 425630839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425630851) 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 11 ways as a sum of consecutive naturals, for example, 332406 + ... + 333683.

It is an arithmetic number, because the mean of its divisors is an integer number (51955020).

Almost surely, 2^425630871 is an apocalyptic number.

425630871 is a deficient number, since it is larger than the sum of its proper divisors (197829369).

425630871 is a wasteful number, since it uses less digits than its factorization.

425630871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666166 (or 666163 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 425630871 is about 20630.8233233674. The cubic root of 425630871 is about 752.2191288138.

The spelling of 425630871 in words is "four hundred twenty-five million, six hundred thirty thousand, eight hundred seventy-one".