55025004720 has 480 divisors, whose sum is σ = 211293619200. Its totient is φ = 11777052672.

The previous prime is 55025004691. The next prime is 55025004803. The reversal of 55025004720 is 2740052055.

It is a super-2 number, since 2×55025004720² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19884777 + ... + 19887543.

It is an arithmetic number, because the mean of its divisors is an integer number (440195040).

Almost surely, 2^55025004720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55025004720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105646809600).

55025004720 is an abundant number, since it is smaller than the sum of its proper divisors (156268614480).

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

55025004720 is a wasteful number, since it uses less digits than its factorization.

55025004720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905 (or 2892 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

Adding to 55025004720 its reverse (2740052055), we get a palindrome (57765056775).

The spelling of 55025004720 in words is "fifty-five billion, twenty-five million, four thousand, seven hundred twenty".