11825221 has 2 divisors, whose sum is σ = 11825222. Its totient is φ = 11825220.

The previous prime is 11825213. The next prime is 11825227. The reversal of 11825221 is 12252811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6812100 + 5013121 = 2610^2 + 2239^2 .

It is an emirp because it is prime and its reverse (12252811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11825221 - 2³ = 11825213 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11825192 and 11825201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11825227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5912610 + 5912611.

It is an arithmetic number, because the mean of its divisors is an integer number (5912611).

Almost surely, 2^11825221 is an apocalyptic number.

It is an amenable number.

11825221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11825221 is an equidigital number, since it uses as much as digits as its factorization.

11825221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320, while the sum is 22.

The square root of 11825221 is about 3438.7819064314. The cubic root of 11825221 is about 227.8258968910.

The spelling of 11825221 in words is "eleven million, eight hundred twenty-five thousand, two hundred twenty-one".