28362912844225 has 6 divisors (see below), whose sum is σ = 35170011926870. Its totient is φ = 22690330275360.

The previous prime is 28362912844219. The next prime is 28362912844243. The reversal of 28362912844225 is 52244821926382.

It can be written as a sum of positive squares in 3 ways, for example, as 523528943809 + 27839383900416 = 723553^2 + 5276304^2 .

It is not a de Polignac number, because 28362912844225 - 2¹⁷ = 28362912713153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28362912844225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567258256860 + ... + 567258256909.

Almost surely, 2^{28362912844225} is an apocalyptic number.

28362912844225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28362912844225 is a deficient number, since it is larger than the sum of its proper divisors (6807099082645).

28362912844225 is a wasteful number, since it uses less digits than its factorization.

28362912844225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134516513779 (or 1134516513774 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 58.

The spelling of 28362912844225 in words is "twenty-eight trillion, three hundred sixty-two billion, nine hundred twelve million, eight hundred forty-four thousand, two hundred twenty-five".