22155240245 has 16 divisors (see below), whose sum is σ = 27751064832. Its totient is φ = 16948166400.

The previous prime is 22155240223. The next prime is 22155240281. The reversal of 22155240245 is 54204255122.

22155240245 = 7841² + 7842² + ... + 8185².

It is not a de Polignac number, because 22155240245 - 2⁶ = 22155240181 is a prime.

It is a Duffinian number.

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, 351920 + ... + 410070.

It is an arithmetic number, because the mean of its divisors is an integer number (1734441552).

Almost surely, 2^22155240245 is an apocalyptic number.

It is an amenable number.

22155240245 is a deficient number, since it is larger than the sum of its proper divisors (5595824587).

22155240245 is a wasteful number, since it uses less digits than its factorization.

22155240245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61492.

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 22155240245 its reverse (54204255122), we get a palindrome (76359495367).

The spelling of 22155240245 in words is "twenty-two billion, one hundred fifty-five million, two hundred forty thousand, two hundred forty-five".