228005454825 has 24 divisors (see below), whose sum is σ = 418854466400. Its totient is φ = 121602908880.

The previous prime is 228005454757. The next prime is 228005454857. The reversal of 228005454825 is 528454500822.

228005454825 is a `hidden beast` number, since 2 + 2 + 80 + 0 + 5 + 4 + 548 + 25 = 666.

It is not a de Polignac number, because 228005454825 - 2⁸ = 228005454569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168892255 + ... + 168893604.

Almost surely, 2^228005454825 is an apocalyptic number.

228005454825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228005454825 is a deficient number, since it is larger than the sum of its proper divisors (190849011575).

228005454825 is a wasteful number, since it uses less digits than its factorization.

228005454825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337785878 (or 337785867 counting only the distinct ones).

The product of its (nonzero) digits is 1024000, while the sum is 45.

The spelling of 228005454825 in words is "two hundred twenty-eight billion, five million, four hundred fifty-four thousand, eight hundred twenty-five".