1125795271 has 4 divisors (see below), whose sum is σ = 1125869544. Its totient is φ = 1125721000.

The previous prime is 1125795259. The next prime is 1125795323. The reversal of 1125795271 is 1725975211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1725975211 = 11273 ⋅153107.

It is a 3-Lehmer number, since φ(1125795271) divides (1125795271-1)³.

It is a cyclic number.

It is not a de Polignac number, because 1125795271 - 2¹¹ = 1125793223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125795071) 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, 5305 + ... + 47746.

It is an arithmetic number, because the mean of its divisors is an integer number (281467386).

Almost surely, 2^1125795271 is an apocalyptic number.

1125795271 is the 21221-st heptagonal number.

1125795271 is a deficient number, since it is larger than the sum of its proper divisors (74273).

1125795271 is an equidigital number, since it uses as much as digits as its factorization.

1125795271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74272.

The product of its digits is 44100, while the sum is 40.

The square root of 1125795271 is about 33552.8727682146. The cubic root of 1125795271 is about 1040.2869249629.

The spelling of 1125795271 in words is "one billion, one hundred twenty-five million, seven hundred ninety-five thousand, two hundred seventy-one".