22520005 has 16 divisors (see below), whose sum is σ = 27800640. Its totient is φ = 17505792.

The previous prime is 22519999. The next prime is 22520033. The reversal of 22520005 is 50002522.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22520005 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28222 + ... + 29008.

It is an arithmetic number, because the mean of its divisors is an integer number (1737540).

Almost surely, 2^22520005 is an apocalyptic number.

It is an amenable number.

22520005 is a deficient number, since it is larger than the sum of its proper divisors (5280635).

22520005 is an equidigital number, since it uses as much as digits as its factorization.

22520005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 22520005 is about 4745.5247338940. The cubic root of 22520005 is about 282.3944524386.

Adding to 22520005 its reverse (50002522), we get a palindrome (72522527).

The spelling of 22520005 in words is "twenty-two million, five hundred twenty thousand, five".