525003221 has 8 divisors (see below), whose sum is σ = 548560320. Its totient is φ = 501507072.

The previous prime is 525003217. The next prime is 525003233. The reversal of 525003221 is 122300525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 525003221 - 2² = 525003217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 525003193 and 525003202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525003121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2846 + ... + 32528.

It is an arithmetic number, because the mean of its divisors is an integer number (68570040).

Almost surely, 2^525003221 is an apocalyptic number.

It is an amenable number.

525003221 is a deficient number, since it is larger than the sum of its proper divisors (23557099).

525003221 is a wasteful number, since it uses less digits than its factorization.

525003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30475.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 525003221 is about 22912.9487626538. The cubic root of 525003221 is about 806.7159728037.

Adding to 525003221 its reverse (122300525), we get a palindrome (647303746).

The spelling of 525003221 in words is "five hundred twenty-five million, three thousand, two hundred twenty-one".