63540825 has 24 divisors (see below), whose sum is σ = 105284928. Its totient is φ = 33814080.

The previous prime is 63540821. The next prime is 63540847. The reversal of 63540825 is 52804536.

It is not a de Polignac number, because 63540825 - 2² = 63540821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63540821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59244 + ... + 60306.

It is an arithmetic number, because the mean of its divisors is an integer number (4386872).

Almost surely, 2^63540825 is an apocalyptic number.

It is an amenable number.

63540825 is a deficient number, since it is larger than the sum of its proper divisors (41744103).

63540825 is a wasteful number, since it uses less digits than its factorization.

63540825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873 (or 1868 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 63540825 is about 7971.2499019915. The cubic root of 63540825 is about 399.0410884753.

The spelling of 63540825 in words is "sixty-three million, five hundred forty thousand, eight hundred twenty-five".