63565525 has 6 divisors (see below), whose sum is σ = 78821282. Its totient is φ = 50852400.

The previous prime is 63565517. The next prime is 63565529. The reversal of 63565525 is 52556536.

It can be written as a sum of positive squares in 3 ways, for example, as 16793604 + 46771921 = 4098^2 + 6839^2 .

It is not a de Polignac number, because 63565525 - 2³ = 63565517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63565529) 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 5 ways as a sum of consecutive naturals, for example, 1271286 + ... + 1271335.

Almost surely, 2^63565525 is an apocalyptic number.

It is an amenable number.

63565525 is a deficient number, since it is larger than the sum of its proper divisors (15255757).

63565525 is a wasteful number, since it uses less digits than its factorization.

63565525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542631 (or 2542626 counting only the distinct ones).

The product of its digits is 135000, while the sum is 37.

The square root of 63565525 is about 7972.7990693357. The cubic root of 63565525 is about 399.0927877203.

It can be divided in two parts, 6356 and 5525, that added together give a square (11881 = 109²).

The spelling of 63565525 in words is "sixty-three million, five hundred sixty-five thousand, five hundred twenty-five".