11551071625 has 32 divisors (see below), whose sum is σ = 15056645760. Its totient is φ = 8838504000.

The previous prime is 11551071619. The next prime is 11551071629. The reversal of 11551071625 is 52617015511.

It is not a de Polignac number, because 11551071625 - 2⁵ = 11551071593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11551071629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251710 + ... + 294040.

It is an arithmetic number, because the mean of its divisors is an integer number (470520180).

Almost surely, 2^11551071625 is an apocalyptic number.

It is an amenable number.

11551071625 is a deficient number, since it is larger than the sum of its proper divisors (3505574135).

11551071625 is an equidigital number, since it uses as much as digits as its factorization.

11551071625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42442 (or 42432 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 34.

The spelling of 11551071625 in words is "eleven billion, five hundred fifty-one million, seventy-one thousand, six hundred twenty-five".