1125372769 has 2 divisors, whose sum is σ = 1125372770. Its totient is φ = 1125372768.

The previous prime is 1125372739. The next prime is 1125372779. The reversal of 1125372769 is 9672735211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 882387025 + 242985744 = 29705^2 + 15588^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125372769 - 2¹⁵ = 1125340001 is a prime.

It is a super-2 number, since 2×1125372769² = 2532927738413454722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1125372739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562686384 + 562686385.

It is an arithmetic number, because the mean of its divisors is an integer number (562686385).

Almost surely, 2^1125372769 is an apocalyptic number.

It is an amenable number.

1125372769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125372769 is an equidigital number, since it uses as much as digits as its factorization.

1125372769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 43.

The square root of 1125372769 is about 33546.5761144114. The cubic root of 1125372769 is about 1040.1567715468.

The spelling of 1125372769 in words is "one billion, one hundred twenty-five million, three hundred seventy-two thousand, seven hundred sixty-nine".