63138525 has 36 divisors (see below), whose sum is σ = 106514016. Its totient is φ = 33000800.

The previous prime is 63138499. The next prime is 63138533. The reversal of 63138525 is 52583136.

It is not a de Polignac number, because 63138525 - 2¹¹ = 63136477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 377992 + ... + 378158.

Almost surely, 2^63138525 is an apocalyptic number.

It is an amenable number.

63138525 is a deficient number, since it is larger than the sum of its proper divisors (43375491).

63138525 is a wasteful number, since it uses less digits than its factorization.

63138525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 246 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 63138525 is about 7945.9753963878. The cubic root of 63138525 is about 398.1971469265.

The spelling of 63138525 in words is "sixty-three million, one hundred thirty-eight thousand, five hundred twenty-five".