1125723277 has 4 divisors (see below), whose sum is σ = 1286540896. Its totient is φ = 964905660.

The previous prime is 1125723253. The next prime is 1125723307. The reversal of 1125723277 is 7723275211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1125723277 - 2¹⁵ = 1125690509 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 (1125723227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80408799 + ... + 80408812.

It is an arithmetic number, because the mean of its divisors is an integer number (321635224).

Almost surely, 2^1125723277 is an apocalyptic number.

It is an amenable number.

1125723277 is a deficient number, since it is larger than the sum of its proper divisors (160817619).

1125723277 is an equidigital number, since it uses as much as digits as its factorization.

1125723277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160817618.

The product of its digits is 41160, while the sum is 37.

The square root of 1125723277 is about 33551.7999070095. The cubic root of 1125723277 is about 1040.2647492277.

Adding to 1125723277 its reverse (7723275211), we get a palindrome (8848998488).

The spelling of 1125723277 in words is "one billion, one hundred twenty-five million, seven hundred twenty-three thousand, two hundred seventy-seven".