22405255 has 16 divisors (see below), whose sum is σ = 27993600. Its totient is φ = 17194240.

The previous prime is 22405249. The next prime is 22405261. The reversal of 22405255 is 55250422.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22405249) and next prime (22405261).

It is not a de Polignac number, because 22405255 - 2³ = 22405247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27291 + ... + 28099.

It is an arithmetic number, because the mean of its divisors is an integer number (1749600).

Almost surely, 2^22405255 is an apocalyptic number.

22405255 is a deficient number, since it is larger than the sum of its proper divisors (5588345).

22405255 is a wasteful number, since it uses less digits than its factorization.

22405255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 22405255 is about 4733.4189546247. The cubic root of 22405255 is about 281.9139913417.

Adding to 22405255 its reverse (55250422), we get a palindrome (77655677).

The spelling of 22405255 in words is "twenty-two million, four hundred five thousand, two hundred fifty-five".