1125800111258 has 16 divisors (see below), whose sum is σ = 1752220524264. Its totient is φ = 542040284160.

The previous prime is 1125800111237. The next prime is 1125800111299. The reversal of 1125800111258 is 8521110085211.

It can be written as a sum of positive squares in 4 ways, for example, as 842858033329 + 282942077929 = 918073^2 + 531923^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78413003 + ... + 78427358.

Almost surely, 2^{1125800111258} is an apocalyptic number.

1125800111258 is a deficient number, since it is larger than the sum of its proper divisors (626420413006).

1125800111258 is a wasteful number, since it uses less digits than its factorization.

1125800111258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156840497.

The product of its (nonzero) digits is 6400, while the sum is 35.

Adding to 1125800111258 its reverse (8521110085211), we get a palindrome (9646910196469).

The spelling of 1125800111258 in words is "one trillion, one hundred twenty-five billion, eight hundred million, one hundred eleven thousand, two hundred fifty-eight".