565525565 has 12 divisors (see below), whose sum is σ = 745933692. Its totient is φ = 411290880.

The previous prime is 565525537. The next prime is 565525577.

It is a happy number.

565525565 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 188156089 + 377369476 = 13717^2 + 19426^2 .

It is not a de Polignac number, because 565525565 - 2¹⁰ = 565524541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466772 + ... + 467981.

It is an arithmetic number, because the mean of its divisors is an integer number (62161141).

Almost surely, 2^565525565 is an apocalyptic number.

565525565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

565525565 is a deficient number, since it is larger than the sum of its proper divisors (180408127).

565525565 is a wasteful number, since it uses less digits than its factorization.

565525565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934780 (or 934769 counting only the distinct ones).

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

The square root of 565525565 is about 23780.7814211392. The cubic root of 565525565 is about 826.9591955058.

The spelling of 565525565 in words is "five hundred sixty-five million, five hundred twenty-five thousand, five hundred sixty-five".