4640444025 has 48 divisors (see below), whose sum is σ = 8777116800. Its totient is φ = 2119196160.

The previous prime is 4640443957. The next prime is 4640444027. The reversal of 4640444025 is 5204440464.

It is not a de Polignac number, because 4640444025 - 2¹² = 4640439929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4640444027) 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 47 ways as a sum of consecutive naturals, for example, 588811 + ... + 596639.

It is an arithmetic number, because the mean of its divisors is an integer number (182856600).

Almost surely, 2^4640444025 is an apocalyptic number.

It is an amenable number.

4640444025 is a deficient number, since it is larger than the sum of its proper divisors (4136672775).

4640444025 is a wasteful number, since it uses less digits than its factorization.

4640444025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8978 (or 8973 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

The square root of 4640444025 is about 68120.8046414603. The cubic root of 4640444025 is about 1667.9633849625.

Adding to 4640444025 its reverse (5204440464), we get a palindrome (9844884489).

The spelling of 4640444025 in words is "four billion, six hundred forty million, four hundred forty-four thousand, twenty-five".