4243645725 has 96 divisors (see below), whose sum is σ = 8142812160. Its totient is φ = 1928448000.

The previous prime is 4243645669. The next prime is 4243645729. The reversal of 4243645725 is 5275463424.

It is not a de Polignac number, because 4243645725 - 2⁷ = 4243645597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243645729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1519080 + ... + 1521870.

It is an arithmetic number, because the mean of its divisors is an integer number (84820960).

Almost surely, 2^4243645725 is an apocalyptic number.

It is an amenable number.

4243645725 is a deficient number, since it is larger than the sum of its proper divisors (3899166435).

4243645725 is a wasteful number, since it uses less digits than its factorization.

4243645725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931 (or 2926 counting only the distinct ones).

The product of its digits is 806400, while the sum is 42.

The square root of 4243645725 is about 65143.2707576155. The cubic root of 4243645725 is about 1618.9982280097.

The spelling of 4243645725 in words is "four billion, two hundred forty-three million, six hundred forty-five thousand, seven hundred twenty-five".