11121725 has 6 divisors (see below), whose sum is σ = 13790970. Its totient is φ = 8897360.

The previous prime is 11121713. The next prime is 11121731. The reversal of 11121725 is 52712111.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 139129 + 10982596 = 373^2 + 3314^2 .

It is not a de Polignac number, because 11121725 - 2⁴ = 11121709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11121697 and 11121706.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 222410 + ... + 222459.

It is an arithmetic number, because the mean of its divisors is an integer number (2298495).

Almost surely, 2^11121725 is an apocalyptic number.

It is an amenable number.

11121725 is a deficient number, since it is larger than the sum of its proper divisors (2669245).

11121725 is an equidigital number, since it uses as much as digits as its factorization.

11121725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444879 (or 444874 counting only the distinct ones).

The product of its digits is 140, while the sum is 20.

The square root of 11121725 is about 3334.9250366388. The cubic root of 11121725 is about 223.2153469511.

Adding to 11121725 its reverse (52712111), we get a palindrome (63833836).

The spelling of 11121725 in words is "eleven million, one hundred twenty-one thousand, seven hundred twenty-five".