1147725 has 18 divisors (see below), whose sum is σ = 2056106. Its totient is φ = 612000.

The previous prime is 1147717. The next prime is 1147739. The reversal of 1147725 is 5277411.

It can be written as a sum of positive squares in 3 ways, for example, as 19881 + 1127844 = 141^2 + 1062^2 .

It is not a de Polignac number, because 1147725 - 2³ = 1147717 is a prime.

It is a Duffinian number.

It is a Curzon number.

1147725 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2326 + ... + 2775.

2^1147725 is an apocalyptic number.

1147725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1147725 is a deficient number, since it is larger than the sum of its proper divisors (908381).

1147725 is a wasteful number, since it uses less digits than its factorization.

1147725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117 (or 5109 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 1147725 is about 1071.3192801401. The cubic root of 1147725 is about 104.6998229349.

The spelling of 1147725 in words is "one million, one hundred forty-seven thousand, seven hundred twenty-five".