1125729 has 24 divisors (see below), whose sum is σ = 1808352. Its totient is φ = 669120.

The previous prime is 1125713. The next prime is 1125739. The reversal of 1125729 is 9275211.

It is not a de Polignac number, because 1125729 - 2⁴ = 1125713 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1125739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8149 + ... + 8285.

It is an arithmetic number, because the mean of its divisors is an integer number (75348).

2^1125729 is an apocalyptic number.

It is an amenable number.

1125729 is a deficient number, since it is larger than the sum of its proper divisors (682623).

1125729 is a wasteful number, since it uses less digits than its factorization.

1125729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 234 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 1125729 is about 1061.0037700216. The cubic root of 1125729 is about 104.0266512072.

The spelling of 1125729 in words is "one million, one hundred twenty-five thousand, seven hundred twenty-nine".