1125251831971 has 4 divisors (see below), whose sum is σ = 1133841540744. Its totient is φ = 1116662123200.

The previous prime is 1125251831969. The next prime is 1125251832007. The reversal of 1125251831971 is 1791381525211.

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 1125251831971 - 2¹ = 1125251831969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125251831471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4294854190 + ... + 4294854451.

It is an arithmetic number, because the mean of its divisors is an integer number (283460385186).

Almost surely, 2^{1125251831971} is an apocalyptic number.

1125251831971 is a deficient number, since it is larger than the sum of its proper divisors (8589708773).

1125251831971 is an equidigital number, since it uses as much as digits as its factorization.

1125251831971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8589708772.

The product of its digits is 151200, while the sum is 46.

The spelling of 1125251831971 in words is "one trillion, one hundred twenty-five billion, two hundred fifty-one million, eight hundred thirty-one thousand, nine hundred seventy-one".