63625321 has 4 divisors (see below), whose sum is σ = 63648144. Its totient is φ = 63602500.

The previous prime is 63625283. The next prime is 63625327. The reversal of 63625321 is 12352636.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63625321 - 2⁹ = 63624809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63625321.

It is not an unprimeable number, because it can be changed into a prime (63625327) 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, 6535 + ... + 13036.

It is an arithmetic number, because the mean of its divisors is an integer number (15912036).

Almost surely, 2^63625321 is an apocalyptic number.

It is an amenable number.

63625321 is a deficient number, since it is larger than the sum of its proper divisors (22823).

63625321 is a wasteful number, since it uses less digits than its factorization.

63625321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22822.

The product of its digits is 6480, while the sum is 28.

The square root of 63625321 is about 7976.5481882829. The cubic root of 63625321 is about 399.2178905086.

Adding to 63625321 its reverse (12352636), we get a palindrome (75977957).

The spelling of 63625321 in words is "sixty-three million, six hundred twenty-five thousand, three hundred twenty-one".