689159125 has 8 divisors (see below), whose sum is σ = 860070744. Its totient is φ = 551327200.

The previous prime is 689159123. The next prime is 689159131. The reversal of 689159125 is 521951986.

It can be written as a sum of positive squares in 4 ways, for example, as 20729809 + 668429316 = 4553^2 + 25854^2 .

It is not a de Polignac number, because 689159125 - 2¹ = 689159123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689159123) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2756512 + ... + 2756761.

It is an arithmetic number, because the mean of its divisors is an integer number (107508843).

Almost surely, 2^689159125 is an apocalyptic number.

It is an amenable number.

689159125 is a deficient number, since it is larger than the sum of its proper divisors (170911619).

689159125 is an equidigital number, since it uses as much as digits as its factorization.

689159125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513288 (or 5513278 counting only the distinct ones).

The product of its digits is 194400, while the sum is 46.

The square root of 689159125 is about 26251.8404116740. The cubic root of 689159125 is about 883.2964879216.

The spelling of 689159125 in words is "six hundred eighty-nine million, one hundred fifty-nine thousand, one hundred twenty-five".