63621125 has 8 divisors (see below), whose sum is σ = 79399320. Its totient is φ = 50896800.

The previous prime is 63621119. The next prime is 63621133. The reversal of 63621125 is 52112636.

It can be written as a sum of positive squares in 4 ways, for example, as 863041 + 62758084 = 929^2 + 7922^2 .

It is a de Polignac number, because none of the positive numbers 2^k-63621125 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63621094 and 63621103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254360 + ... + 254609.

It is an arithmetic number, because the mean of its divisors is an integer number (9924915).

Almost surely, 2^63621125 is an apocalyptic number.

It is an amenable number.

63621125 is a deficient number, since it is larger than the sum of its proper divisors (15778195).

63621125 is an equidigital number, since it uses as much as digits as its factorization.

63621125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508984 (or 508974 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 63621125 is about 7976.2851629064. The cubic root of 63621125 is about 399.2091143637.

The spelling of 63621125 in words is "sixty-three million, six hundred twenty-one thousand, one hundred twenty-five".