28225028025 has 72 divisors (see below), whose sum is σ = 52964697344. Its totient is φ = 14350089600.

The previous prime is 28225028011. The next prime is 28225028033. The reversal of 28225028025 is 52082052282.

It is not a de Polignac number, because 28225028025 - 2⁴ = 28225028009 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 437127 + ... + 497523.

Almost surely, 2^28225028025 is an apocalyptic number.

28225028025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28225028025 is a deficient number, since it is larger than the sum of its proper divisors (24739669319).

28225028025 is a wasteful number, since it uses less digits than its factorization.

28225028025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60511 (or 60503 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The spelling of 28225028025 in words is "twenty-eight billion, two hundred twenty-five million, twenty-eight thousand, twenty-five".