55212425250400 has 288 divisors, whose sum is σ = 148099231980000. Its totient is φ = 19932846489600.

The previous prime is 55212425250373. The next prime is 55212425250419. The reversal of 55212425250400 is 405252421255.

It is a self number, because there is not a number n which added to its sum of digits gives 55212425250400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3059020576 + ... + 3059038624.

It is an arithmetic number, because the mean of its divisors is an integer number (514233444375).

Almost surely, 2^{55212425250400} is an apocalyptic number.

55212425250400 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 55212425250400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74049615990000).

55212425250400 is an abundant number, since it is smaller than the sum of its proper divisors (92886806729600).

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

55212425250400 is a wasteful number, since it uses less digits than its factorization.

55212425250400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20562 (or 20549 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 37.

Adding to 55212425250400 its reverse (405252421255), we get a palindrome (55617677671655).

The spelling of 55212425250400 in words is "fifty-five trillion, two hundred twelve billion, four hundred twenty-five million, two hundred fifty thousand, four hundred".