28063559225025 has 81 divisors (see below), whose sum is σ = 50572963821289. Its totient is φ = 14876072120640.

The previous prime is 28063559224979. The next prime is 28063559225059. The reversal of 28063559225025 is 52052295536082.

The square root of 28063559225025 is 5297505.

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

28063559225025 is a `hidden beast` number, since 2 + 8 + 0 + 6 + 3 + 5 + 592 + 25 + 0 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5201314248321 + 22862244976704 = 2280639^2 + 4781448^2 .

It is not a de Polignac number, because 28063559225025 - 2²³ = 28063550836417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 14223799939 + ... + 14223801911.

Almost surely, 2^{28063559225025} is an apocalyptic number.

28063559225025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28063559225025 is the 5297505-th square number.

28063559225025 is the 2648753-rd centered octagonal number.

It is an amenable number.

28063559225025 is a deficient number, since it is larger than the sum of its proper divisors (22509404596264).

28063559225025 is an frugal number, since it uses more digits than its factorization.

28063559225025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320 (or 2160 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 54.

The spelling of 28063559225025 in words is "twenty-eight trillion, sixty-three billion, five hundred fifty-nine million, two hundred twenty-five thousand, twenty-five".