525565565 has 32 divisors (see below), whose sum is σ = 743212800. Its totient is φ = 349300224.

The previous prime is 525565561. The next prime is 525565577. The reversal of 525565565 is 565565525.

It is a happy number.

It is not a de Polignac number, because 525565565 - 2² = 525565561 is a prime.

It is a super-2 number, since 2×525565565² = 552438326227538450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525565561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204911 + ... + 207459.

It is an arithmetic number, because the mean of its divisors is an integer number (23225400).

Almost surely, 2^525565565 is an apocalyptic number.

It is an amenable number.

525565565 is a deficient number, since it is larger than the sum of its proper divisors (217647235).

525565565 is a wasteful number, since it uses less digits than its factorization.

525565565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741.

The product of its digits is 1125000, while the sum is 44.

The square root of 525565565 is about 22925.2167928681. The cubic root of 525565565 is about 807.0039012027.

The spelling of 525565565 in words is "five hundred twenty-five million, five hundred sixty-five thousand, five hundred sixty-five".