63525537 has 6 divisors (see below), whose sum is σ = 91759122. Its totient is φ = 42350352.

The previous prime is 63525533. The next prime is 63525547. The reversal of 63525537 is 73552536.

It can be written as a sum of positive squares in only one way, i.e., 43086096 + 20439441 = 6564^2 + 4521^2 .

It is not a de Polignac number, because 63525537 - 2² = 63525533 is a prime.

It is a super-2 number, since 2×63525537² = 8070987702276738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63525533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3529188 + ... + 3529205.

It is an arithmetic number, because the mean of its divisors is an integer number (15293187).

Almost surely, 2^63525537 is an apocalyptic number.

It is an amenable number.

63525537 is a deficient number, since it is larger than the sum of its proper divisors (28233585).

63525537 is a wasteful number, since it uses less digits than its factorization.

63525537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7058399 (or 7058396 counting only the distinct ones).

The product of its digits is 94500, while the sum is 36.

The square root of 63525537 is about 7970.2908980789. The cubic root of 63525537 is about 399.0090826508.

The spelling of 63525537 in words is "sixty-three million, five hundred twenty-five thousand, five hundred thirty-seven".