810925489 has 16 divisors (see below), whose sum is σ = 898919424. Its totient is φ = 725403600.

The previous prime is 810925471. The next prime is 810925523. The reversal of 810925489 is 984529018.

It is a cyclic number.

It is not a de Polignac number, because 810925489 - 2¹¹ = 810923441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (810925889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182484 + ... + 186874.

It is an arithmetic number, because the mean of its divisors is an integer number (56182464).

Almost surely, 2^810925489 is an apocalyptic number.

It is an amenable number.

810925489 is a deficient number, since it is larger than the sum of its proper divisors (87993935).

810925489 is a wasteful number, since it uses less digits than its factorization.

810925489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 810925489 is about 28476.7534842018. The cubic root of 810925489 is about 932.5246425217.

The spelling of 810925489 in words is "eight hundred ten million, nine hundred twenty-five thousand, four hundred eighty-nine".