525545065 has 4 divisors (see below), whose sum is σ = 630654084. Its totient is φ = 420436048.

The previous prime is 525545063. The next prime is 525545131. The reversal of 525545065 is 560545525.

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 82737216 + 442807849 = 9096^2 + 21043^2 .

It is a cyclic number.

It is not a de Polignac number, because 525545065 - 2¹ = 525545063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525545063) 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 3 ways as a sum of consecutive naturals, for example, 52554502 + ... + 52554511.

It is an arithmetic number, because the mean of its divisors is an integer number (157663521).

Almost surely, 2^525545065 is an apocalyptic number.

It is an amenable number.

525545065 is a deficient number, since it is larger than the sum of its proper divisors (105109019).

525545065 is a wasteful number, since it uses less digits than its factorization.

525545065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105109018.

The product of its (nonzero) digits is 150000, while the sum is 37.

The square root of 525545065 is about 22924.7696825944. The cubic root of 525545065 is about 806.9934085093.

The spelling of 525545065 in words is "five hundred twenty-five million, five hundred forty-five thousand, sixty-five".