63525563 has 4 divisors (see below), whose sum is σ = 66287568. Its totient is φ = 60763560.

The previous prime is 63525557. The next prime is 63525571. The reversal of 63525563 is 36552536.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63525563 - 2⁴ = 63525547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63525503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380968 + ... + 1381013.

It is an arithmetic number, because the mean of its divisors is an integer number (16571892).

Almost surely, 2^63525563 is an apocalyptic number.

63525563 is a deficient number, since it is larger than the sum of its proper divisors (2762005).

63525563 is a wasteful number, since it uses less digits than its factorization.

63525563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762004.

The product of its digits is 81000, while the sum is 35.

The square root of 63525563 is about 7970.2925291359. The cubic root of 63525563 is about 399.0091370868.

The spelling of 63525563 in words is "sixty-three million, five hundred twenty-five thousand, five hundred sixty-three".