11678655825 has 18 divisors (see below), whose sum is σ = 20917770614. Its totient is φ = 6228616320.

The previous prime is 11678655809. The next prime is 11678655827. The reversal of 11678655825 is 52855687611.

11678655825 is a `hidden beast` number, since 1 + 1 + 6 + 7 + 86 + 558 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 28259856 + 11650395969 = 5316^2 + 107937^2 .

It is not a de Polignac number, because 11678655825 - 2⁴ = 11678655809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11678655827) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25952344 + ... + 25952793.

Almost surely, 2^11678655825 is an apocalyptic number.

11678655825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11678655825 is a deficient number, since it is larger than the sum of its proper divisors (9239114789).

11678655825 is a wasteful number, since it uses less digits than its factorization.

11678655825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51905153 (or 51905145 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 54.

The spelling of 11678655825 in words is "eleven billion, six hundred seventy-eight million, six hundred fifty-five thousand, eight hundred twenty-five".