869043125 has 10 divisors (see below), whose sum is σ = 1085957070. Its totient is φ = 695234000.

The previous prime is 869043121. The next prime is 869043191. The reversal of 869043125 is 521340968.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 255936004 + 613107121 = 15998^2 + 24761^2 .

It is not a de Polignac number, because 869043125 - 2² = 869043121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869043121) 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 9 ways as a sum of consecutive naturals, for example, 694610 + ... + 695859.

It is an arithmetic number, because the mean of its divisors is an integer number (108595707).

Almost surely, 2^869043125 is an apocalyptic number.

It is an amenable number.

869043125 is a deficient number, since it is larger than the sum of its proper divisors (216913945).

869043125 is an equidigital number, since it uses as much as digits as its factorization.

869043125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390489 (or 1390474 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 869043125 is about 29479.5373946064. The cubic root of 869043125 is about 954.2901534993.

It can be divided in two parts, 8690 and 43125, that added together give a palindrome (51815).

The spelling of 869043125 in words is "eight hundred sixty-nine million, forty-three thousand, one hundred twenty-five".