11228725 has 6 divisors (see below), whose sum is σ = 13923650. Its totient is φ = 8982960.

The previous prime is 11228689. The next prime is 11228743. The reversal of 11228725 is 52782211.

It can be written as a sum of positive squares in 3 ways, for example, as 1456849 + 9771876 = 1207^2 + 3126^2 .

It is not a de Polignac number, because 11228725 - 2¹³ = 11220533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11228693 and 11228702.

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, 224550 + ... + 224599.

Almost surely, 2^11228725 is an apocalyptic number.

It is an amenable number.

11228725 is a deficient number, since it is larger than the sum of its proper divisors (2694925).

11228725 is an equidigital number, since it uses as much as digits as its factorization.

11228725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449159 (or 449154 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 11228725 is about 3350.9289756723. The cubic root of 11228725 is about 223.9289009576.

The spelling of 11228725 in words is "eleven million, two hundred twenty-eight thousand, seven hundred twenty-five".