11857778656425 has 96 divisors (see below), whose sum is σ = 23678050757760. Its totient is φ = 5783117472000.

The previous prime is 11857778656417. The next prime is 11857778656447. The reversal of 11857778656425 is 52465687775811.

11857778656425 is a `hidden beast` number, since 1 + 1 + 8 + 5 + 7 + 77 + 86 + 56 + 425 = 666.

11857778656425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11857778656425 - 2³ = 11857778656417 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5375626 + ... + 7253475.

It is an arithmetic number, because the mean of its divisors is an integer number (246646362060).

Almost surely, 2^{11857778656425} is an apocalyptic number.

11857778656425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11857778656425 is a deficient number, since it is larger than the sum of its proper divisors (11820272101335).

11857778656425 is a wasteful number, since it uses less digits than its factorization.

11857778656425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12629240 (or 12629229 counting only the distinct ones).

The product of its digits is 790272000, while the sum is 72.

The spelling of 11857778656425 in words is "eleven trillion, eight hundred fifty-seven billion, seven hundred seventy-eight million, six hundred fifty-six thousand, four hundred twenty-five".