1125251831969 has 2 divisors, whose sum is σ = 1125251831970. Its totient is φ = 1125251831968.

The previous prime is 1125251831929. The next prime is 1125251832007. The reversal of 1125251831969 is 9691381525211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1059277340944 + 65974491025 = 1029212^2 + 256855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125251831969 is a prime.

It is a super-2 number, since 2×1125251831969² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1125251831969.

It is not a weakly prime, because it can be changed into another prime (1125251831909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562625915984 + 562625915985.

It is an arithmetic number, because the mean of its divisors is an integer number (562625915985).

Almost surely, 2^{1125251831969} is an apocalyptic number.

It is an amenable number.

1125251831969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125251831969 is an equidigital number, since it uses as much as digits as its factorization.

1125251831969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 53.

The spelling of 1125251831969 in words is "one trillion, one hundred twenty-five billion, two hundred fifty-one million, eight hundred thirty-one thousand, nine hundred sixty-nine".