22625505640 has 16 divisors (see below), whose sum is σ = 50907387780. Its totient is φ = 9050202240.

The previous prime is 22625505631. The next prime is 22625505647. The reversal of 22625505640 is 4650552622.

It can be written as a sum of positive squares in 2 ways, for example, as 21884468356 + 741037284 = 147934^2 + 27222^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22625505640.

It is not an unprimeable number, because it can be changed into a prime (22625505647) 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, 282818781 + ... + 282818860.

Almost surely, 2^22625505640 is an apocalyptic number.

22625505640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22625505640 is an abundant number, since it is smaller than the sum of its proper divisors (28281882140).

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

22625505640 is a wasteful number, since it uses less digits than its factorization.

22625505640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565637652 (or 565637648 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 22625505640 in words is "twenty-two billion, six hundred twenty-five million, five hundred five thousand, six hundred forty".