1125565071 has 16 divisors (see below), whose sum is σ = 1539600384. Its totient is φ = 731097504.

The previous prime is 1125565057. The next prime is 1125565141. The reversal of 1125565071 is 1705655211.

It is a happy number.

It is not a de Polignac number, because 1125565071 - 2⁷ = 1125564943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125565031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13545 + ... + 49341.

It is an arithmetic number, because the mean of its divisors is an integer number (96225024).

Almost surely, 2^1125565071 is an apocalyptic number.

1125565071 is a deficient number, since it is larger than the sum of its proper divisors (414035313).

1125565071 is a wasteful number, since it uses less digits than its factorization.

1125565071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36070.

The product of its (nonzero) digits is 10500, while the sum is 33.

The square root of 1125565071 is about 33549.4421861229. The cubic root of 1125565071 is about 1040.2160149787.

The spelling of 1125565071 in words is "one billion, one hundred twenty-five million, five hundred sixty-five thousand, seventy-one".