11425221 has 12 divisors (see below), whose sum is σ = 16667820. Its totient is φ = 7540800.

The previous prime is 11425201. The next prime is 11425223. The reversal of 11425221 is 12252411.

11425221 is a `hidden beast` number, since 1 + 142 + 522 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11189025 + 236196 = 3345^2 + 486^2 .

It is not a de Polignac number, because 11425221 - 2¹¹ = 11423173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11425194 and 11425203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11425223) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5376 + ... + 7193.

It is an arithmetic number, because the mean of its divisors is an integer number (1388985).

Almost surely, 2^11425221 is an apocalyptic number.

It is an amenable number.

11425221 is a deficient number, since it is larger than the sum of its proper divisors (5242599).

11425221 is a wasteful number, since it uses less digits than its factorization.

11425221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12676 (or 12673 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 11425221 is about 3380.1214475223. The cubic root of 11425221 is about 225.2275623611.

Adding to 11425221 its reverse (12252411), we get a palindrome (23677632).

The spelling of 11425221 in words is "eleven million, four hundred twenty-five thousand, two hundred twenty-one".