11777805825 has 24 divisors (see below), whose sum is σ = 19707259488. Its totient is φ = 6205812480.

The previous prime is 11777805797. The next prime is 11777805827. The reversal of 11777805825 is 52850877711.

It is a happy number.

It is not a de Polignac number, because 11777805825 - 2¹⁸ = 11777543681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11777805827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 939784 + ... + 952233.

It is an arithmetic number, because the mean of its divisors is an integer number (821135812).

Almost surely, 2^11777805825 is an apocalyptic number.

11777805825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11777805825 is a deficient number, since it is larger than the sum of its proper divisors (7929453663).

11777805825 is a wasteful number, since it uses less digits than its factorization.

11777805825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892113 (or 1892108 counting only the distinct ones).

The product of its (nonzero) digits is 1097600, while the sum is 51.

The spelling of 11777805825 in words is "eleven billion, seven hundred seventy-seven million, eight hundred five thousand, eight hundred twenty-five".