525442661 has 8 divisors (see below), whose sum is σ = 539940480. Its totient is φ = 510960528.

The previous prime is 525442639. The next prime is 525442669. The reversal of 525442661 is 166244525.

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

It is not a de Polignac number, because 525442661 - 2⁶ = 525442597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525442669) 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, 104360 + ... + 109278.

It is an arithmetic number, because the mean of its divisors is an integer number (67492560).

Almost surely, 2^525442661 is an apocalyptic number.

It is an amenable number.

525442661 is a deficient number, since it is larger than the sum of its proper divisors (14497819).

525442661 is a wasteful number, since it uses less digits than its factorization.

525442661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7843.

The product of its digits is 57600, while the sum is 35.

The square root of 525442661 is about 22922.5360944203. The cubic root of 525442661 is about 806.9409900923.

The spelling of 525442661 in words is "five hundred twenty-five million, four hundred forty-two thousand, six hundred sixty-one".