2566422020 has 12 divisors (see below), whose sum is σ = 5389486284. Its totient is φ = 1026568800.

The previous prime is 2566422011. The next prime is 2566422029. The reversal of 2566422020 is 202246652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2566422011) and next prime (2566422029).

It can be written as a sum of positive squares in 2 ways, for example, as 1484406784 + 1082015236 = 38528^2 + 32894^2 .

It is not an unprimeable number, because it can be changed into a prime (2566422029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64160531 + ... + 64160570.

It is an arithmetic number, because the mean of its divisors is an integer number (449123857).

Almost surely, 2^2566422020 is an apocalyptic number.

2566422020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2566422020 is an abundant number, since it is smaller than the sum of its proper divisors (2823064264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2566422020 is a wasteful number, since it uses less digits than its factorization.

2566422020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128321110 (or 128321108 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 2566422020 is about 50659.8659690292. The cubic root of 2566422020 is about 1369.1237083590.

Adding to 2566422020 its reverse (202246652), we get a palindrome (2768668672).

The spelling of 2566422020 in words is "two billion, five hundred sixty-six million, four hundred twenty-two thousand, twenty".