22556925 has 36 divisors (see below), whose sum is σ = 41807220. Its totient is φ = 11612160.

The previous prime is 22556923. The next prime is 22556999. The reversal of 22556925 is 52965522.

It can be written as a sum of positive squares in 6 ways, for example, as 4485924 + 18071001 = 2118^2 + 4251^2 .

It is not a de Polignac number, because 22556925 - 2¹ = 22556923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22556925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22556923) 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 35 ways as a sum of consecutive naturals, for example, 4797 + ... + 8253.

Almost surely, 2^22556925 is an apocalyptic number.

22556925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22556925 is a deficient number, since it is larger than the sum of its proper divisors (19250295).

22556925 is a wasteful number, since it uses less digits than its factorization.

22556925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502 (or 3494 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 22556925 is about 4749.4131216393. The cubic root of 22556925 is about 282.5486902788.

It can be divided in two parts, 2255 and 6925, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 22556925 in words is "twenty-two million, five hundred fifty-six thousand, nine hundred twenty-five".