850008508425 has 18 divisors (see below), whose sum is σ = 1522459684382. Its totient is φ = 453337871040.

The previous prime is 850008508343. The next prime is 850008508463. The reversal of 850008508425 is 524805800058.

It can be written as a sum of positive squares in 3 ways, for example, as 28046870784 + 821961637641 = 167472^2 + 906621^2 .

It is not a de Polignac number, because 850008508425 - 2⁸ = 850008508169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1888907572 + ... + 1888908021.

Almost surely, 2^850008508425 is an apocalyptic number.

It is an amenable number.

850008508425 is a deficient number, since it is larger than the sum of its proper divisors (672451175957).

850008508425 is a wasteful number, since it uses less digits than its factorization.

850008508425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777815609 (or 3777815601 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 45.

The spelling of 850008508425 in words is "eight hundred fifty billion, eight million, five hundred eight thousand, four hundred twenty-five".