63725851 has 4 divisors (see below), whose sum is σ = 72829552. Its totient is φ = 54622152.

The previous prime is 63725839. The next prime is 63725887. The reversal of 63725851 is 15852736.

63725851 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 is a cyclic number.

It is not a de Polignac number, because 63725851 - 2¹⁵ = 63693083 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 63725851.

It is not an unprimeable number, because it can be changed into a prime (63725351) 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 3 ways as a sum of consecutive naturals, for example, 4551840 + ... + 4551853.

It is an arithmetic number, because the mean of its divisors is an integer number (18207388).

Almost surely, 2^63725851 is an apocalyptic number.

63725851 is a deficient number, since it is larger than the sum of its proper divisors (9103701).

63725851 is an equidigital number, since it uses as much as digits as its factorization.

63725851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9103700.

The product of its digits is 50400, while the sum is 37.

The square root of 63725851 is about 7982.8472990531. The cubic root of 63725851 is about 399.4280387908.

The spelling of 63725851 in words is "sixty-three million, seven hundred twenty-five thousand, eight hundred fifty-one".