63621825 has 24 divisors (see below), whose sum is σ = 106133088. Its totient is φ = 33626880.

The previous prime is 63621821. The next prime is 63621839. The reversal of 63621825 is 52812636.

63621825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63621825 - 2² = 63621821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63621821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4722 + ... + 12228.

It is an arithmetic number, because the mean of its divisors is an integer number (4422212).

Almost surely, 2^63621825 is an apocalyptic number.

It is an amenable number.

63621825 is a deficient number, since it is larger than the sum of its proper divisors (42511263).

63621825 is a wasteful number, since it uses less digits than its factorization.

63621825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7633 (or 7628 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 63621825 is about 7976.3290428618. The cubic root of 63621825 is about 399.2105784757.

It can be divided in two parts, 63621 and 825, that added together give a palindrome (64446).

The spelling of 63621825 in words is "sixty-three million, six hundred twenty-one thousand, eight hundred twenty-five".