2220445025 has 6 divisors (see below), whose sum is σ = 2753351862. Its totient is φ = 1776356000.

The previous prime is 2220445009. The next prime is 2220445037. The reversal of 2220445025 is 5205440222.

It can be written as a sum of positive squares in 3 ways, for example, as 2411809 + 2218033216 = 1553^2 + 47096^2 .

It is not a de Polignac number, because 2220445025 - 2⁴ = 2220445009 is a prime.

It is a super-2 number, since 2×2220445025² = 9860752218094501250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220444985 and 2220445003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44408876 + ... + 44408925.

It is an arithmetic number, because the mean of its divisors is an integer number (458891977).

Almost surely, 2^2220445025 is an apocalyptic number.

2220445025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2220445025 is a deficient number, since it is larger than the sum of its proper divisors (532906837).

2220445025 is an equidigital number, since it uses as much as digits as its factorization.

2220445025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88817811 (or 88817806 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 2220445025 is about 47121.5982857118. The cubic root of 2220445025 is about 1304.6079130173.

Adding to 2220445025 its reverse (5205440222), we get a palindrome (7425885247).

The spelling of 2220445025 in words is "two billion, two hundred twenty million, four hundred forty-five thousand, twenty-five".