22515021240255 has 32 divisors (see below), whose sum is σ = 40027022380800. Its totient is φ = 12007915942176.

The previous prime is 22515021240221. The next prime is 22515021240319. The reversal of 22515021240255 is 55204212051522.

22515021240255 is a `hidden beast` number, since 2 + 2 + 5 + 1 + 502 + 124 + 0 + 25 + 5 = 666.

It is not a de Polignac number, because 22515021240255 - 2²⁸ = 22514752804799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18425076 + ... + 19609014.

It is an arithmetic number, because the mean of its divisors is an integer number (1250844449400).

Almost surely, 2^{22515021240255} is an apocalyptic number.

22515021240255 is a deficient number, since it is larger than the sum of its proper divisors (17512001140545).

22515021240255 is a wasteful number, since it uses less digits than its factorization.

22515021240255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324820 (or 1324814 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

Adding to 22515021240255 its reverse (55204212051522), we get a palindrome (77719233291777).

The spelling of 22515021240255 in words is "twenty-two trillion, five hundred fifteen billion, twenty-one million, two hundred forty thousand, two hundred fifty-five".