228735025 has 6 divisors (see below), whose sum is σ = 283631462. Its totient is φ = 182988000.

The previous prime is 228735011. The next prime is 228735037. The reversal of 228735025 is 520537822.

It can be written as a sum of positive squares in 3 ways, for example, as 8479744 + 220255281 = 2912^2 + 14841^2 .

It is not a de Polignac number, because 228735025 - 2⁵ = 228734993 is a prime.

It is a Duffinian number.

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, 4574676 + ... + 4574725.

Almost surely, 2^228735025 is an apocalyptic number.

228735025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228735025 is a deficient number, since it is larger than the sum of its proper divisors (54896437).

228735025 is an equidigital number, since it uses as much as digits as its factorization.

228735025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9149411 (or 9149406 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 228735025 is about 15123.9883959226. The cubic root of 228735025 is about 611.5672544531.

The spelling of 228735025 in words is "two hundred twenty-eight million, seven hundred thirty-five thousand, twenty-five".