525223228 has 12 divisors (see below), whose sum is σ = 973207872. Its totient is φ = 247163840.

The previous prime is 525223217. The next prime is 525223271. The reversal of 525223228 is 822322525.

It is a self number, because there is not a number n which added to its sum of digits gives 525223228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3861868 + ... + 3862003.

It is an arithmetic number, because the mean of its divisors is an integer number (81100656).

Almost surely, 2^525223228 is an apocalyptic number.

It is an amenable number.

525223228 is a deficient number, since it is larger than the sum of its proper divisors (447984644).

525223228 is a wasteful number, since it uses less digits than its factorization.

525223228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7723892 (or 7723890 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 525223228 is about 22917.7491914018. The cubic root of 525223228 is about 806.8286440965.

The spelling of 525223228 in words is "five hundred twenty-five million, two hundred twenty-three thousand, two hundred twenty-eight".