22585481 has 2 divisors, whose sum is σ = 22585482. Its totient is φ = 22585480.

The previous prime is 22585457. The next prime is 22585483. The reversal of 22585481 is 18458522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19009600 + 3575881 = 4360^2 + 1891^2 .

It is a cyclic number.

It is not a de Polignac number, because 22585481 - 2¹⁸ = 22323337 is a prime.

It is a super-2 number, since 2×22585481² = 1020207904002722, which contains 22 as substring.

Together with 22585483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22585483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11292740 + 11292741.

It is an arithmetic number, because the mean of its divisors is an integer number (11292741).

Almost surely, 2^22585481 is an apocalyptic number.

It is an amenable number.

22585481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22585481 is an equidigital number, since it uses as much as digits as its factorization.

22585481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25600, while the sum is 35.

The square root of 22585481 is about 4752.4184369645. The cubic root of 22585481 is about 282.6678710925.

The spelling of 22585481 in words is "twenty-two million, five hundred eighty-five thousand, four hundred eighty-one".