809884394425 has 12 divisors (see below), whose sum is σ = 1047919982400. Its totient is φ = 619737623120.

The previous prime is 809884394419. The next prime is 809884394441. The reversal of 809884394425 is 524493488908.

It is a happy number.

It is not a de Polignac number, because 809884394425 - 2¹⁹ = 809883870137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 704246725 + ... + 704247874.

It is an arithmetic number, because the mean of its divisors is an integer number (87326665200).

Almost surely, 2^809884394425 is an apocalyptic number.

It is an amenable number.

809884394425 is a deficient number, since it is larger than the sum of its proper divisors (238035587975).

809884394425 is a wasteful number, since it uses less digits than its factorization.

809884394425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408494632 (or 1408494627 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 64.

The spelling of 809884394425 in words is "eight hundred nine billion, eight hundred eighty-four million, three hundred ninety-four thousand, four hundred twenty-five".