1128725 has 24 divisors (see below), whose sum is σ = 1583232. Its totient is φ = 792000.

The previous prime is 1128719. The next prime is 1128727. The reversal of 1128725 is 5278211.

It is not a de Polignac number, because 1128725 - 2⁶ = 1128661 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1128694 and 1128703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128727) 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, 7400 + ... + 7550.

It is an arithmetic number, because the mean of its divisors is an integer number (65968).

2^1128725 is an apocalyptic number.

It is an amenable number.

1128725 is a deficient number, since it is larger than the sum of its proper divisors (454507).

1128725 is a wasteful number, since it uses less digits than its factorization.

1128725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 192 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 1128725 is about 1062.4147024585. The cubic root of 1128725 is about 104.1188545022.

The spelling of 1128725 in words is "one million, one hundred twenty-eight thousand, seven hundred twenty-five".