525321609 has 8 divisors (see below), whose sum is σ = 700623552. Its totient is φ = 350117040.

The previous prime is 525321571. The next prime is 525321617. The reversal of 525321609 is 906123525.

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

It is not a de Polignac number, because 525321609 - 2¹³ = 525313417 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 525321609.

It is not an unprimeable number, because it can be changed into a prime (525321809) 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, 10654 + ... + 34119.

It is an arithmetic number, because the mean of its divisors is an integer number (87577944).

Almost surely, 2^525321609 is an apocalyptic number.

It is an amenable number.

525321609 is a deficient number, since it is larger than the sum of its proper divisors (175301943).

525321609 is a wasteful number, since it uses less digits than its factorization.

525321609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48687.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 525321609 is about 22919.8954840549. The cubic root of 525321609 is about 806.8790173784.

It can be divided in two parts, 5253 and 21609, that added together give a palindrome (26862).

The spelling of 525321609 in words is "five hundred twenty-five million, three hundred twenty-one thousand, six hundred nine".