22450005 has 24 divisors (see below), whose sum is σ = 39651768. Its totient is φ = 11746176.

The previous prime is 22450003. The next prime is 22450027. The reversal of 22450005 is 50005422.

It can be written as a sum of positive squares in 4 ways, for example, as 11737476 + 10712529 = 3426^2 + 3273^2 .

It is not a de Polignac number, because 22450005 - 2¹ = 22450003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22450005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22450003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2322 + ... + 7091.

It is an arithmetic number, because the mean of its divisors is an integer number (1652157).

Almost surely, 2^22450005 is an apocalyptic number.

It is an amenable number.

22450005 is a deficient number, since it is larger than the sum of its proper divisors (17201763).

22450005 is a wasteful number, since it uses less digits than its factorization.

22450005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9477 (or 9474 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 22450005 is about 4738.1436238257. The cubic root of 22450005 is about 282.1015553952.

Adding to 22450005 its reverse (50005422), we get a palindrome (72455427).

The spelling of 22450005 in words is "twenty-two million, four hundred fifty thousand, five".