1125745 has 4 divisors (see below), whose sum is σ = 1350900. Its totient is φ = 900592.

The previous prime is 1125739. The next prime is 1125763. The reversal of 1125745 is 5475211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 512656 + 613089 = 716^2 + 783^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125745 - 2⁵ = 1125713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112570 + ... + 112579.

It is an arithmetic number, because the mean of its divisors is an integer number (337725).

2^1125745 is an apocalyptic number.

It is an amenable number.

1125745 is a deficient number, since it is larger than the sum of its proper divisors (225155).

1125745 is an equidigital number, since it uses as much as digits as its factorization.

1125745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225154.

The product of its digits is 1400, while the sum is 25.

The square root of 1125745 is about 1061.0113100245. The cubic root of 1125745 is about 104.0271440489.

The spelling of 1125745 in words is "one million, one hundred twenty-five thousand, seven hundred forty-five".