228870725 has 12 divisors (see below), whose sum is σ = 290401056. Its totient is φ = 178837680.

The previous prime is 228870703. The next prime is 228870731. The reversal of 228870725 is 527078822.

It is a happy number.

It is not a de Polignac number, because 228870725 - 2¹⁸ = 228608581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105377 + ... + 107526.

It is an arithmetic number, because the mean of its divisors is an integer number (24200088).

Almost surely, 2^228870725 is an apocalyptic number.

228870725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228870725 is a deficient number, since it is larger than the sum of its proper divisors (61530331).

228870725 is a wasteful number, since it uses less digits than its factorization.

228870725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212956 (or 212951 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 228870725 is about 15128.4739812051. The cubic root of 228870725 is about 611.6881705951.

The spelling of 228870725 in words is "two hundred twenty-eight million, eight hundred seventy thousand, seven hundred twenty-five".