20255106320 has 20 divisors (see below), whose sum is σ = 47093122380. Its totient is φ = 8102042496.

The previous prime is 20255106283. The next prime is 20255106341. The reversal of 20255106320 is 2360155202.

It can be written as a sum of positive squares in 2 ways, for example, as 4711998736 + 15543107584 = 68644^2 + 124672^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 20255106320.

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, 126594335 + ... + 126594494.

It is an arithmetic number, because the mean of its divisors is an integer number (2354656119).

Almost surely, 2^20255106320 is an apocalyptic number.

20255106320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20255106320 is an abundant number, since it is smaller than the sum of its proper divisors (26838016060).

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

20255106320 is a wasteful number, since it uses less digits than its factorization.

20255106320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253188842 (or 253188836 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 20255106320 in words is "twenty billion, two hundred fifty-five million, one hundred six thousand, three hundred twenty".