220525105525 has 6 divisors (see below), whose sum is σ = 273451130882. Its totient is φ = 176420084400.

The previous prime is 220525105523. The next prime is 220525105529. The reversal of 220525105525 is 525501525022.

It can be written as a sum of positive squares in 3 ways, for example, as 9769740964 + 210755364561 = 98842^2 + 459081^2 .

It is not a de Polignac number, because 220525105525 - 2¹ = 220525105523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220525105523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4410502086 + ... + 4410502135.

Almost surely, 2^220525105525 is an apocalyptic number.

220525105525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220525105525 is a deficient number, since it is larger than the sum of its proper divisors (52926025357).

220525105525 is an equidigital number, since it uses as much as digits as its factorization.

220525105525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8821004231 (or 8821004226 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 34.

The spelling of 220525105525 in words is "two hundred twenty billion, five hundred twenty-five million, one hundred five thousand, five hundred twenty-five".