525505513 has 16 divisors (see below), whose sum is σ = 600082560. Its totient is φ = 455890176.

The previous prime is 525505501. The next prime is 525505517. The reversal of 525505513 is 315505525.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 525505513 - 2⁵ = 525505481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525505517) 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 15 ways as a sum of consecutive naturals, for example, 212478 + ... + 214936.

It is an arithmetic number, because the mean of its divisors is an integer number (37505160).

Almost surely, 2^525505513 is an apocalyptic number.

It is an amenable number.

525505513 is a deficient number, since it is larger than the sum of its proper divisors (74577047).

525505513 is a wasteful number, since it uses less digits than its factorization.

525505513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456.

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 525505513 is about 22923.9070186563. The cubic root of 525505513 is about 806.9731634937.

The spelling of 525505513 in words is "five hundred twenty-five million, five hundred five thousand, five hundred thirteen".