228385025 has 24 divisors (see below), whose sum is σ = 310855104. Its totient is φ = 165070400.

The previous prime is 228385019. The next prime is 228385043. The reversal of 228385025 is 520583822.

It is not a de Polignac number, because 228385025 - 2¹⁴ = 228368641 is a prime.

It is a Duffinian number.

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, 43439 + ... + 48411.

It is an arithmetic number, because the mean of its divisors is an integer number (12952296).

Almost surely, 2^228385025 is an apocalyptic number.

228385025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228385025 is a deficient number, since it is larger than the sum of its proper divisors (82470079).

228385025 is a wasteful number, since it uses less digits than its factorization.

228385025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161 (or 5156 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 228385025 is about 15112.4129443316. The cubic root of 228385025 is about 611.2551643571.

The spelling of 228385025 in words is "two hundred twenty-eight million, three hundred eighty-five thousand, twenty-five".