64306163725 has 24 divisors (see below), whose sum is σ = 81914444640. Its totient is φ = 50042502720.

The previous prime is 64306163723. The next prime is 64306163729. The reversal of 64306163725 is 52736160346.

64306163725 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 64306163725 - 2¹ = 64306163723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64306163723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7287366 + ... + 7296184.

It is an arithmetic number, because the mean of its divisors is an integer number (3413101860).

Almost surely, 2^64306163725 is an apocalyptic number.

It is an amenable number.

64306163725 is a deficient number, since it is larger than the sum of its proper divisors (17608280915).

64306163725 is a wasteful number, since it uses less digits than its factorization.

64306163725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16749 (or 16744 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 64306163725 in words is "sixty-four billion, three hundred six million, one hundred sixty-three thousand, seven hundred twenty-five".