28625256100 has 81 divisors (see below), whose sum is σ = 72288233283. Its totient is φ = 9810312960.

The previous prime is 28625256089. The next prime is 28625256167. The reversal of 28625256100 is 165252682.

The square root of 28625256100 is 169190.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 6118055524 + 22507200576 = 78218^2 + 150024^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28625256100.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11842092 + ... + 11844508.

Almost surely, 2^28625256100 is an apocalyptic number.

28625256100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

28625256100 is the 169190-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28625256100

28625256100 is an abundant number, since it is smaller than the sum of its proper divisors (43662977183).

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

28625256100 is an equidigital number, since it uses as much as digits as its factorization.

28625256100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4862 (or 2431 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 28625256100 in words is "twenty-eight billion, six hundred twenty-five million, two hundred fifty-six thousand, one hundred".