689416925 has 12 divisors (see below), whose sum is σ = 860543136. Its totient is φ = 547878000.

The previous prime is 689416909. The next prime is 689416939. The reversal of 689416925 is 529614986.

It is not a de Polignac number, because 689416925 - 2⁴ = 689416909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 87539 + ... + 95088.

It is an arithmetic number, because the mean of its divisors is an integer number (71711928).

Almost surely, 2^689416925 is an apocalyptic number.

It is an amenable number.

689416925 is a deficient number, since it is larger than the sum of its proper divisors (171126211).

689416925 is a wasteful number, since it uses less digits than its factorization.

689416925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182788 (or 182783 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The square root of 689416925 is about 26256.7500845021. The cubic root of 689416925 is about 883.4066150983.

The spelling of 689416925 in words is "six hundred eighty-nine million, four hundred sixteen thousand, nine hundred twenty-five".