228007725 has 24 divisors (see below), whose sum is σ = 411244512. Its totient is φ = 110548800.

The previous prime is 228007711. The next prime is 228007777. The reversal of 228007725 is 527700822.

It is not a de Polignac number, because 228007725 - 2⁴ = 228007709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137362 + ... + 139011.

It is an arithmetic number, because the mean of its divisors is an integer number (17135188).

Almost surely, 2^228007725 is an apocalyptic number.

228007725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228007725 is a deficient number, since it is larger than the sum of its proper divisors (183236787).

228007725 is a wasteful number, since it uses less digits than its factorization.

228007725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276397 (or 276392 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 228007725 is about 15099.9246686863. The cubic root of 228007725 is about 610.9183738995.

The spelling of 228007725 in words is "two hundred twenty-eight million, seven thousand, seven hundred twenty-five".