628720225500 has 96 divisors (see below), whose sum is σ = 1831554466560. Its totient is φ = 167592686400.

The previous prime is 628720225487. The next prime is 628720225541. The reversal of 628720225500 is 5522027826.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3787239 + ... + 3949761.

It is an arithmetic number, because the mean of its divisors is an integer number (19078692360).

Almost surely, 2^628720225500 is an apocalyptic number.

628720225500 is a gapful number since it is divisible by the number (60) 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 628720225500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915777233280).

628720225500 is an abundant number, since it is smaller than the sum of its proper divisors (1202834241060).

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

628720225500 is a wasteful number, since it uses less digits than its factorization.

628720225500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165124 (or 165112 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 628720225500 in words is "six hundred twenty-eight billion, seven hundred twenty million, two hundred twenty-five thousand, five hundred".