28225688805504 has 48 divisors (see below), whose sum is σ = 81222359717070. Its totient is φ = 9408562934784.

The previous prime is 28225688805487. The next prime is 28225688805527. The reversal of 28225688805504 is 40550888652282.

28225688805504 is a `hidden beast` number, since 2 + 8 + 22 + 56 + 8 + 8 + 8 + 0 + 550 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17172404481600 + 11053284323904 = 4143960^2 + 3324648^2 .

It is a tau number, because it is divible by the number of its divisors (48).

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, 12250731837 + ... + 12250734140.

Almost surely, 2^{28225688805504} is an apocalyptic number.

28225688805504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28225688805504 is an abundant number, since it is smaller than the sum of its proper divisors (52996670911566).

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

28225688805504 is a wasteful number, since it uses less digits than its factorization.

28225688805504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24501465997 (or 24501465982 counting only the distinct ones).

The product of its (nonzero) digits is 98304000, while the sum is 63.

The spelling of 28225688805504 in words is "twenty-eight trillion, two hundred twenty-five billion, six hundred eighty-eight million, eight hundred five thousand, five hundred four".