228144525 has 24 divisors (see below), whose sum is σ = 431085504. Its totient is φ = 104294400.

The previous prime is 228144523. The next prime is 228144529. The reversal of 228144525 is 525441822.

It is not a de Polignac number, because 228144525 - 2¹ = 228144523 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228144523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216756 + ... + 217805.

It is an arithmetic number, because the mean of its divisors is an integer number (17961896).

Almost surely, 2^228144525 is an apocalyptic number.

228144525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228144525 is a deficient number, since it is larger than the sum of its proper divisors (202940979).

228144525 is a wasteful number, since it uses less digits than its factorization.

228144525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434581 (or 434576 counting only the distinct ones).

The product of its digits is 25600, while the sum is 33.

The square root of 228144525 is about 15104.4538133625. The cubic root of 228144525 is about 611.0405290077.

The spelling of 228144525 in words is "two hundred twenty-eight million, one hundred forty-four thousand, five hundred twenty-five".