11805725407 has 16 divisors (see below), whose sum is σ = 14111032320. Its totient is φ = 9657122112.

The previous prime is 11805725389. The next prime is 11805725423. The reversal of 11805725407 is 70452750811.

It is a cyclic number.

It is not a de Polignac number, because 11805725407 - 2¹⁹ = 11805201119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11805725407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11805726407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12838 + ... + 154195.

It is an arithmetic number, because the mean of its divisors is an integer number (881939520).

Almost surely, 2^11805725407 is an apocalyptic number.

11805725407 is a deficient number, since it is larger than the sum of its proper divisors (2305306913).

11805725407 is a wasteful number, since it uses less digits than its factorization.

11805725407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167502.

The product of its (nonzero) digits is 78400, while the sum is 40.

The spelling of 11805725407 in words is "eleven billion, eight hundred five million, seven hundred twenty-five thousand, four hundred seven".