22520685 has 32 divisors (see below), whose sum is σ = 40279680. Its totient is φ = 10649600.

The previous prime is 22520683. The next prime is 22520689. The reversal of 22520685 is 58602522.

It is not a de Polignac number, because 22520685 - 2¹ = 22520683 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5101 + ... + 8429.

It is an arithmetic number, because the mean of its divisors is an integer number (1258740).

Almost surely, 2^22520685 is an apocalyptic number.

It is an amenable number.

22520685 is a deficient number, since it is larger than the sum of its proper divisors (17758995).

22520685 is a wasteful number, since it uses less digits than its factorization.

22520685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 22520685 is about 4745.5963798031. The cubic root of 22520685 is about 282.3972947455.

It can be divided in two parts, 225 and 20685, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 22520685 in words is "twenty-two million, five hundred twenty thousand, six hundred eighty-five".