11725715605 has 8 divisors (see below), whose sum is σ = 14173566552. Its totient is φ = 9312100608.

The previous prime is 11725715543. The next prime is 11725715641. The reversal of 11725715605 is 50651752711.

11725715605 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 4 ways, for example, as 224011089 + 11501704516 = 14967^2 + 107246^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11725715605 - 2⁹ = 11725715093 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 8558232 + ... + 8559601.

It is an arithmetic number, because the mean of its divisors is an integer number (1771695819).

Almost surely, 2^11725715605 is an apocalyptic number.

It is an amenable number.

11725715605 is a deficient number, since it is larger than the sum of its proper divisors (2447850947).

11725715605 is a wasteful number, since it uses less digits than its factorization.

11725715605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17117975.

The product of its (nonzero) digits is 73500, while the sum is 40.

The spelling of 11725715605 in words is "eleven billion, seven hundred twenty-five million, seven hundred fifteen thousand, six hundred five".