19955225088 has 90 divisors (see below), whose sum is σ = 57619819257. Its totient is φ = 6648545280.

The previous prime is 19955225071. The next prime is 19955225089. The reversal of 19955225088 is 88052255991.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

19955225088 is a `hidden beast` number, since 1 + 9 + 9 + 552 + 2 + 5 + 0 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19658283264 + 296941824 = 140208^2 + 17232^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=99888.

It is a super-2 number, since 2×19955225088² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19955225089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9588208 + ... + 9590288.

Almost surely, 2^19955225088 is an apocalyptic number.

19955225088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19955225088

19955225088 is an abundant number, since it is smaller than the sum of its proper divisors (37664594169).

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

19955225088 is an frugal number, since it uses more digits than its factorization.

19955225088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4186 (or 2086 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 54.

The spelling of 19955225088 in words is "nineteen billion, nine hundred fifty-five million, two hundred twenty-five thousand, eighty-eight".