1125269765 has 8 divisors (see below), whose sum is σ = 1375801848. Its totient is φ = 883230400.

The previous prime is 1125269741. The next prime is 1125269767. The reversal of 1125269765 is 5679625211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 130119649 + 995150116 = 11407^2 + 31546^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1125269765 - 2²⁸ = 856834309 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 (1125269767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122886 + ... + 2123415.

It is an arithmetic number, because the mean of its divisors is an integer number (171975231).

Almost surely, 2^1125269765 is an apocalyptic number.

It is an amenable number.

1125269765 is a deficient number, since it is larger than the sum of its proper divisors (250532083).

1125269765 is an equidigital number, since it uses as much as digits as its factorization.

1125269765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4246359.

The product of its digits is 226800, while the sum is 44.

The square root of 1125269765 is about 33545.0408406369. The cubic root of 1125269765 is about 1040.1250358173.

The spelling of 1125269765 in words is "one billion, one hundred twenty-five million, two hundred sixty-nine thousand, seven hundred sixty-five".