643360125 has 16 divisors (see below), whose sum is σ = 1070551872. Its totient is φ = 343125200.

The previous prime is 643360103. The next prime is 643360127. The reversal of 643360125 is 521063346.

It is not a de Polignac number, because 643360125 - 2⁶ = 643360061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 643360092 and 643360101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643360127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 857439 + ... + 858188.

It is an arithmetic number, because the mean of its divisors is an integer number (66909492).

Almost surely, 2^643360125 is an apocalyptic number.

It is an amenable number.

643360125 is a deficient number, since it is larger than the sum of its proper divisors (427191747).

643360125 is a wasteful number, since it uses less digits than its factorization.

643360125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715645 (or 1715635 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 643360125 is about 25364.5446440499. The cubic root of 643360125 is about 863.2794046936.

The spelling of 643360125 in words is "six hundred forty-three million, three hundred sixty thousand, one hundred twenty-five".