22250565 has 32 divisors (see below), whose sum is σ = 40487040. Its totient is φ = 11587968.

The previous prime is 22250563. The next prime is 22250567. The reversal of 22250565 is 56505222.

It is an interprime number because it is at equal distance from previous prime (22250563) and next prime (22250567).

It is not a de Polignac number, because 22250565 - 2¹ = 22250563 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22250563) 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, 3889 + ... + 7721.

It is an arithmetic number, because the mean of its divisors is an integer number (1265220).

Almost surely, 2^22250565 is an apocalyptic number.

It is an amenable number.

22250565 is a deficient number, since it is larger than the sum of its proper divisors (18236475).

22250565 is a wasteful number, since it uses less digits than its factorization.

22250565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890 (or 3884 counting only the distinct ones).

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

The square root of 22250565 is about 4717.0504555283. The cubic root of 22250565 is about 281.2636971107.

Adding to 22250565 its reverse (56505222), we get a palindrome (78755787).

The spelling of 22250565 in words is "twenty-two million, two hundred fifty thousand, five hundred sixty-five".