11571256025125 has 32 divisors (see below), whose sum is σ = 15308321674464. Its totient is φ = 8702259840000.

The previous prime is 11571256025117. The next prime is 11571256025243. The reversal of 11571256025125 is 52152065217511.

It can be written as a sum of positive squares in 16 ways, for example, as 5387235965764 + 6184020059361 = 2321042^2 + 2486769^2 .

It is not a de Polignac number, because 11571256025125 - 2³ = 11571256025117 is a prime.

It is a super-2 number, since 2×11571256025125² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 1379226 + ... + 5004475.

It is an arithmetic number, because the mean of its divisors is an integer number (478385052327).

Almost surely, 2^{11571256025125} is an apocalyptic number.

It is an amenable number.

11571256025125 is a deficient number, since it is larger than the sum of its proper divisors (3737065649339).

11571256025125 is an equidigital number, since it uses as much as digits as its factorization.

11571256025125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6384586 (or 6384576 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 43.

The spelling of 11571256025125 in words is "eleven trillion, five hundred seventy-one billion, two hundred fifty-six million, twenty-five thousand, one hundred twenty-five".