228725141 has 4 divisors (see below), whose sum is σ = 228849132. Its totient is φ = 228601152.

The previous prime is 228725129. The next prime is 228725143. The reversal of 228725141 is 141527822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100922116 + 127803025 = 10046^2 + 11305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228725141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 228725098 and 228725107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228725143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59186 + ... + 62931.

It is an arithmetic number, because the mean of its divisors is an integer number (57212283).

Almost surely, 2^228725141 is an apocalyptic number.

It is an amenable number.

228725141 is a deficient number, since it is larger than the sum of its proper divisors (123991).

228725141 is a wasteful number, since it uses less digits than its factorization.

228725141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123990.

The product of its digits is 8960, while the sum is 32.

The square root of 228725141 is about 15123.6616267358. The cubic root of 228725141 is about 611.5584453988.

The spelling of 228725141 in words is "two hundred twenty-eight million, seven hundred twenty-five thousand, one hundred forty-one".