55125440000 has 200 divisors, whose sum is σ = 142100363328. Its totient is φ = 21335040000.

The previous prime is 55125439991. The next prime is 55125440023. The reversal of 55125440000 is 4452155.

55125440000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (200).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9917222 + ... + 9922778.

Almost surely, 2^55125440000 is an apocalyptic number.

55125440000 is a gapful number since it is divisible by the number (50) 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 55125440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71050181664).

55125440000 is an abundant number, since it is smaller than the sum of its proper divisors (86974923328).

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

55125440000 is an frugal number, since it uses more digits than its factorization.

55125440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626 (or 5595 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 55125440000 its reverse (4452155), we get a palindrome (55129892155).

The spelling of 55125440000 in words is "fifty-five billion, one hundred twenty-five million, four hundred forty thousand".