20250128620 has 12 divisors (see below), whose sum is σ = 42525270144. Its totient is φ = 8100051440.

The previous prime is 20250128603. The next prime is 20250128641. The reversal of 20250128620 is 2682105202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506253196 + ... + 506253235.

It is an arithmetic number, because the mean of its divisors is an integer number (3543772512).

Almost surely, 2^20250128620 is an apocalyptic number.

20250128620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20250128620 is an abundant number, since it is smaller than the sum of its proper divisors (22275141524).

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

20250128620 is a wasteful number, since it uses less digits than its factorization.

20250128620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012506440 (or 1012506438 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The spelling of 20250128620 in words is "twenty billion, two hundred fifty million, one hundred twenty-eight thousand, six hundred twenty".