22505526 has 20 divisors (see below), whose sum is σ = 50429412. Its totient is φ = 7501788.

The previous prime is 22505521. The next prime is 22505551. The reversal of 22505526 is 62550522.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 22505526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505521) 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 9 ways as a sum of consecutive naturals, for example, 69300 + ... + 69623.

Almost surely, 2^22505526 is an apocalyptic number.

22505526 is an abundant number, since it is smaller than the sum of its proper divisors (27923886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22505526 is a wasteful number, since it uses less digits than its factorization.

22505526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138937 (or 138928 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 22505526 is about 4743.9989460370. The cubic root of 22505526 is about 282.3339186173. Note that the first 3 decimals are identical.

It can be divided in two parts, 2250 and 5526, that added together give a 5-th power (7776 = 6⁵).

The spelling of 22505526 in words is "twenty-two million, five hundred five thousand, five hundred twenty-six".