220105552225 has 24 divisors (see below), whose sum is σ = 311215315320. Its totient is φ = 152978334720.

The previous prime is 220105552211. The next prime is 220105552229. The reversal of 220105552225 is 522255501022.

It can be written as a sum of positive squares in 12 ways, for example, as 73180529361 + 146925022864 = 270519^2 + 383308^2 .

It is not a de Polignac number, because 220105552225 - 2²⁹ = 219568681313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220105552229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19913530 + ... + 19924579.

It is an arithmetic number, because the mean of its divisors is an integer number (12967304805).

Almost surely, 2^220105552225 is an apocalyptic number.

220105552225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220105552225 is a deficient number, since it is larger than the sum of its proper divisors (91109763095).

220105552225 is a wasteful number, since it uses less digits than its factorization.

220105552225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39838149 (or 39838144 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The spelling of 220105552225 in words is "two hundred twenty billion, one hundred five million, five hundred fifty-two thousand, two hundred twenty-five".