1111725 has 42 divisors (see below), whose sum is σ = 2100746. Its totient is φ = 583200.

The previous prime is 1111723. The next prime is 1111727. The reversal of 1111725 is 5271111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1111723) and next prime (1111727).

It can be written as a sum of positive squares in 3 ways, for example, as 2916 + 1108809 = 54^2 + 1053^2 .

It is not a de Polignac number, because 1111725 - 2¹ = 1111723 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1111698 and 1111707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111723) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 18195 + ... + 18255.

2^1111725 is an apocalyptic number.

1111725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1111725 is a deficient number, since it is larger than the sum of its proper divisors (989021).

1111725 is an frugal number, since it uses more digits than its factorization.

1111725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 69 counting only the distinct ones).

The product of its digits is 70, while the sum is 18.

The square root of 1111725 is about 1054.3837062474. The cubic root of 1111725 is about 103.5934883083.

Adding to 1111725 its reverse (5271111), we get a palindrome (6382836).

The spelling of 1111725 in words is "one million, one hundred eleven thousand, seven hundred twenty-five".