689775825 has 12 divisors (see below), whose sum is σ = 1140429488. Its totient is φ = 367880400.

The previous prime is 689775811. The next prime is 689775851. The reversal of 689775825 is 528577986.

It is a happy number.

It is not a de Polignac number, because 689775825 - 2¹⁰ = 689774801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4598431 + ... + 4598580.

Almost surely, 2^689775825 is an apocalyptic number.

It is an amenable number.

689775825 is a deficient number, since it is larger than the sum of its proper divisors (450653663).

689775825 is a wasteful number, since it uses less digits than its factorization.

689775825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9197024 (or 9197019 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 57.

The square root of 689775825 is about 26263.5836282865. The cubic root of 689775825 is about 883.5598845354.

The spelling of 689775825 in words is "six hundred eighty-nine million, seven hundred seventy-five thousand, eight hundred twenty-five".