525250321 has 8 divisors (see below), whose sum is σ = 539865000. Its totient is φ = 510829440.

The previous prime is 525250301. The next prime is 525250331. The reversal of 525250321 is 123052525.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12680721 + 512569600 = 3561^2 + 22640^2 .

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 525250321 - 2¹³ = 525242129 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525250301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42946 + ... + 53803.

It is an arithmetic number, because the mean of its divisors is an integer number (67483125).

Almost surely, 2^525250321 is an apocalyptic number.

It is an amenable number.

525250321 is a deficient number, since it is larger than the sum of its proper divisors (14614679).

525250321 is an equidigital number, since it uses as much as digits as its factorization.

525250321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96899.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 525250321 is about 22918.3402758577. The cubic root of 525250321 is about 806.8425169487.

The spelling of 525250321 in words is "five hundred twenty-five million, two hundred fifty thousand, three hundred twenty-one".