220442217425 has 6 divisors (see below), whose sum is σ = 273348349638. Its totient is φ = 176353773920.

The previous prime is 220442217421. The next prime is 220442217439. The reversal of 220442217425 is 524712244022.

220442217425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 76868671504 + 143573545921 = 277252^2 + 378911^2 .

It is not a de Polignac number, because 220442217425 - 2² = 220442217421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220442217421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4408844324 + ... + 4408844373.

It is an arithmetic number, because the mean of its divisors is an integer number (45558058273).

Almost surely, 2^220442217425 is an apocalyptic number.

220442217425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220442217425 is a deficient number, since it is larger than the sum of its proper divisors (52906132213).

220442217425 is an equidigital number, since it uses as much as digits as its factorization.

220442217425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8817688707 (or 8817688702 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 35.

The spelling of 220442217425 in words is "two hundred twenty billion, four hundred forty-two million, two hundred seventeen thousand, four hundred twenty-five".