1153825 has 6 divisors (see below), whose sum is σ = 1430774. Its totient is φ = 923040.

The previous prime is 1153811. The next prime is 1153849. The reversal of 1153825 is 5283511.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 277729 + 876096 = 527^2 + 936^2 .

It is not a de Polignac number, because 1153825 - 2¹⁹ = 629537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 46153 = 1153825 / (1 + 1 + 5 + 3 + 8 + 2 + 5).

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 1153825.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23052 + ... + 23101.

2^1153825 is an apocalyptic number.

It is an amenable number.

1153825 is a deficient number, since it is larger than the sum of its proper divisors (276949).

1153825 is an equidigital number, since it uses as much as digits as its factorization.

1153825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46163 (or 46158 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 1153825 is about 1074.1624644345. The cubic root of 1153825 is about 104.8849836572.

The spelling of 1153825 in words is "one million, one hundred fifty-three thousand, eight hundred twenty-five".