525585350561 has 4 divisors (see below), whose sum is σ = 525586947732. Its totient is φ = 525583753392.

The previous prime is 525585350519. The next prime is 525585350569. The reversal of 525585350561 is 165053585525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 233898944161 + 291686406400 = 483631^2 + 540080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525585350561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (525585350569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103046 + ... + 1030431.

It is an arithmetic number, because the mean of its divisors is an integer number (131396736933).

Almost surely, 2^525585350561 is an apocalyptic number.

It is an amenable number.

525585350561 is a deficient number, since it is larger than the sum of its proper divisors (1597171).

525585350561 is a wasteful number, since it uses less digits than its factorization.

525585350561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597170.

The product of its (nonzero) digits is 4500000, while the sum is 50.

The spelling of 525585350561 in words is "five hundred twenty-five billion, five hundred eighty-five million, three hundred fifty thousand, five hundred sixty-one".