10689409825 has 6 divisors (see below), whose sum is σ = 13254868214. Its totient is φ = 8551527840.

The previous prime is 10689409817. The next prime is 10689409883. The reversal of 10689409825 is 52890498601.

10689409825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 387971809 + 10301438016 = 19697^2 + 101496^2 .

It is not a de Polignac number, because 10689409825 - 2³ = 10689409817 is a prime.

It is a super-2 number, since 2×10689409825² (a number of 21 digits) contains 22 as substring.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 213788172 + ... + 213788221.

Almost surely, 2^10689409825 is an apocalyptic number.

It is an amenable number.

10689409825 is a deficient number, since it is larger than the sum of its proper divisors (2565458389).

10689409825 is an equidigital number, since it uses as much as digits as its factorization.

10689409825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427576403 (or 427576398 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 10689409825 in words is "ten billion, six hundred eighty-nine million, four hundred nine thousand, eight hundred twenty-five".