1155625 has 15 divisors (see below), whose sum is σ = 1478433. Its totient is φ = 903000.

The previous prime is 1155619. The next prime is 1155629. The reversal of 1155625 is 5265511.

The square root of 1155625 is 1075.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 90601 + 1065024 = 301^2 + 1032^2 .

It is not a de Polignac number, because 1155625 - 2³ = 1155617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155625.

It is not an unprimeable number, because it can be changed into a prime (1155629) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 26854 + ... + 26896.

2^1155625 is an apocalyptic number.

1155625 is the 1075-th square number.

1155625 is the 538-th centered octagonal number.

It is an amenable number.

1155625 is a deficient number, since it is larger than the sum of its proper divisors (322808).

1155625 is an frugal number, since it uses more digits than its factorization.

1155625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 48 counting only the distinct ones).

The product of its digits is 1500, while the sum is 25.

The cubic root of 1155625 is about 104.9394965113.

Multiplying 1155625 by its sum of digits (25), we get a square (28890625 = 5375²).

1155625 divided by its sum of digits (25) gives a square (46225 = 215²).

The spelling of 1155625 in words is "one million, one hundred fifty-five thousand, six hundred twenty-five".