11656432425 has 24 divisors (see below), whose sum is σ = 21023966880. Its totient is φ = 5651603200.

The previous prime is 11656432391. The next prime is 11656432451. The reversal of 11656432425 is 52423465611.

11656432425 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 11656432425 - 2⁷ = 11656432297 is a prime.

It is a Curzon 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 23 ways as a sum of consecutive naturals, for example, 7063680 + ... + 7065329.

It is an arithmetic number, because the mean of its divisors is an integer number (875998620).

Almost surely, 2^11656432425 is an apocalyptic number.

11656432425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11656432425 is a deficient number, since it is larger than the sum of its proper divisors (9367534455).

11656432425 is a wasteful number, since it uses less digits than its factorization.

11656432425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14129033 (or 14129028 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The spelling of 11656432425 in words is "eleven billion, six hundred fifty-six million, four hundred thirty-two thousand, four hundred twenty-five".