22022505 has 12 divisors (see below), whose sum is σ = 38172420. Its totient is φ = 11745312.

The previous prime is 22022503. The next prime is 22022509. The reversal of 22022505 is 50522022.

It can be written as a sum of positive squares in 2 ways, for example, as 13571856 + 8450649 = 3684^2 + 2907^2 .

It is not a de Polignac number, because 22022505 - 2¹ = 22022503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22022503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244650 + ... + 244739.

It is an arithmetic number, because the mean of its divisors is an integer number (3181035).

Almost surely, 2^22022505 is an apocalyptic number.

It is an amenable number.

22022505 is a deficient number, since it is larger than the sum of its proper divisors (16149915).

22022505 is a wasteful number, since it uses less digits than its factorization.

22022505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489400 (or 489397 counting only the distinct ones).

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

The square root of 22022505 is about 4692.8141876703. The cubic root of 22022505 is about 280.2994458002.

Adding to 22022505 its reverse (50522022), we get a palindrome (72544527).

The spelling of 22022505 in words is "twenty-two million, twenty-two thousand, five hundred five".