525989525 has 6 divisors (see below), whose sum is σ = 652227042. Its totient is φ = 420791600.

The previous prime is 525989491. The next prime is 525989567.

525989525 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 708964 + 525280561 = 842^2 + 22919^2 .

It is not a de Polignac number, because 525989525 - 2¹² = 525985429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10519766 + ... + 10519815.

It is an arithmetic number, because the mean of its divisors is an integer number (108704507).

Almost surely, 2^525989525 is an apocalyptic number.

It is an amenable number.

525989525 is a deficient number, since it is larger than the sum of its proper divisors (126237517).

525989525 is a wasteful number, since it uses less digits than its factorization.

525989525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21039591 (or 21039586 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 50.

The square root of 525989525 is about 22934.4615153703. The cubic root of 525989525 is about 807.2208391963.

The spelling of 525989525 in words is "five hundred twenty-five million, nine hundred eighty-nine thousand, five hundred twenty-five".