11911142525 has 6 divisors (see below), whose sum is σ = 14769816762. Its totient is φ = 9528914000.

The previous prime is 11911142519. The next prime is 11911142557. The reversal of 11911142525 is 52524111911.

It can be written as a sum of positive squares in 3 ways, for example, as 1691347876 + 10219794649 = 41126^2 + 101093^2 .

It is not a de Polignac number, because 11911142525 - 2¹⁴ = 11911126141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11911142491 and 11911142500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 238222826 + ... + 238222875.

It is an arithmetic number, because the mean of its divisors is an integer number (2461636127).

Almost surely, 2^11911142525 is an apocalyptic number.

It is an amenable number.

11911142525 is a deficient number, since it is larger than the sum of its proper divisors (2858674237).

11911142525 is an equidigital number, since it uses as much as digits as its factorization.

11911142525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476445711 (or 476445706 counting only the distinct ones).

The product of its digits is 3600, while the sum is 32.

The spelling of 11911142525 in words is "eleven billion, nine hundred eleven million, one hundred forty-two thousand, five hundred twenty-five".