1125895985971 has 4 divisors (see below), whose sum is σ = 1126306749744. Its totient is φ = 1125485222200.

The previous prime is 1125895985941. The next prime is 1125895986013. The reversal of 1125895985971 is 1795895985211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1125895985971 - 2⁵ = 1125895985939 is a prime.

It is a super-2 number, since 2×1125895985971² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1125895985971.

It is not an unprimeable number, because it can be changed into a prime (1125895985941) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 205377775 + ... + 205383256.

It is an arithmetic number, because the mean of its divisors is an integer number (281576687436).

Almost surely, 2^{1125895985971} is an apocalyptic number.

1125895985971 is a deficient number, since it is larger than the sum of its proper divisors (410763773).

1125895985971 is an equidigital number, since it uses as much as digits as its factorization.

1125895985971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410763772.

The product of its digits is 81648000, while the sum is 70.

The spelling of 1125895985971 in words is "one trillion, one hundred twenty-five billion, eight hundred ninety-five million, nine hundred eighty-five thousand, nine hundred seventy-one".