55025550400 has 168 divisors, whose sum is σ = 143098296480. Its totient is φ = 20767703040.

The previous prime is 55025550353. The next prime is 55025550403. The reversal of 55025550400 is 405552055.

It is a super-2 number, since 2×55025550400² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55025550403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7809279 + ... + 7816321.

Almost surely, 2^55025550400 is an apocalyptic number.

55025550400 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 55025550400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71549148240).

55025550400 is an abundant number, since it is smaller than the sum of its proper divisors (88072746080).

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

55025550400 is a wasteful number, since it uses less digits than its factorization.

55025550400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7341 (or 7326 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 31.

The spelling of 55025550400 in words is "fifty-five billion, twenty-five million, five hundred fifty thousand, four hundred".