22225777780 has 12 divisors (see below), whose sum is σ = 46674133380. Its totient is φ = 8890311104.

The previous prime is 22225777753. The next prime is 22225777807. The reversal of 22225777780 is 8777752222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22225777753) and next prime (22225777807).

It can be written as a sum of positive squares in 2 ways, for example, as 7824817764 + 14400960016 = 88458^2 + 120004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555644425 + ... + 555644464.

It is an arithmetic number, because the mean of its divisors is an integer number (3889511115).

Almost surely, 2^22225777780 is an apocalyptic number.

22225777780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22225777780 is an abundant number, since it is smaller than the sum of its proper divisors (24448355600).

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

22225777780 is a wasteful number, since it uses less digits than its factorization.

22225777780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111288898 (or 1111288896 counting only the distinct ones).

The product of its (nonzero) digits is 1536640, while the sum is 49.

The spelling of 22225777780 in words is "twenty-two billion, two hundred twenty-five million, seven hundred seventy-seven thousand, seven hundred eighty".