63625378 has 4 divisors (see below), whose sum is σ = 95438070. Its totient is φ = 31812688.

The previous prime is 63625369. The next prime is 63625381. The reversal of 63625378 is 87352636.

63625378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49660209 + 13965169 = 7047^2 + 3737^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 63625378.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15906343 + ... + 15906346.

Almost surely, 2^63625378 is an apocalyptic number.

63625378 is a deficient number, since it is larger than the sum of its proper divisors (31812692).

63625378 is a wasteful number, since it uses less digits than its factorization.

63625378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31812691.

The product of its digits is 181440, while the sum is 40.

The square root of 63625378 is about 7976.5517612562. The cubic root of 63625378 is about 399.2180097243.

The spelling of 63625378 in words is "sixty-three million, six hundred twenty-five thousand, three hundred seventy-eight".