55255012000 has 96 divisors (see below), whose sum is σ = 135873947664. Its totient is φ = 22083712000.

The previous prime is 55255011919. The next prime is 55255012031. The reversal of 55255012000 is 21055255.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 15333373584 + 39921638416 = 123828^2 + 199804^2 .

It is a super-2 number, since 2×55255012000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5486970 + ... + 5497030.

Almost surely, 2^55255012000 is an apocalyptic number.

55255012000 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 55255012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67936973832).

55255012000 is an abundant number, since it is smaller than the sum of its proper divisors (80618935664).

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

55255012000 is a wasteful number, since it uses less digits than its factorization.

55255012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11459 (or 11441 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

Adding to 55255012000 its reverse (21055255), we get a palindrome (55276067255).

The spelling of 55255012000 in words is "fifty-five billion, two hundred fifty-five million, twelve thousand".