1158125 has 20 divisors (see below), whose sum is σ = 1546380. Its totient is φ = 864000.

The previous prime is 1158121. The next prime is 1158133. The reversal of 1158125 is 5218511.

It can be written as a sum of positive squares in 10 ways, for example, as 619369 + 538756 = 787^2 + 734^2 .

It is not a de Polignac number, because 1158125 - 2² = 1158121 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1158125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10571 + ... + 10679.

It is an arithmetic number, because the mean of its divisors is an integer number (77319).

2^1158125 is an apocalyptic number.

It is an amenable number.

1158125 is a deficient number, since it is larger than the sum of its proper divisors (388255).

1158125 is an equidigital number, since it uses as much as digits as its factorization.

1158125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 131 counting only the distinct ones).

The product of its digits is 400, while the sum is 23.

The square root of 1158125 is about 1076.1621625015. The cubic root of 1158125 is about 105.0151149820.

The spelling of 1158125 in words is "one million, one hundred fifty-eight thousand, one hundred twenty-five".