4144664425 has 54 divisors (see below), whose sum is σ = 5768563514. Its totient is φ = 2951308800.

The previous prime is 4144664399. The next prime is 4144664429. The reversal of 4144664425 is 5244664414.

It can be written as a sum of positive squares in 9 ways, for example, as 667085584 + 3477578841 = 25828^2 + 58971^2 .

It is not a de Polignac number, because 4144664425 - 2⁵ = 4144664393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4144664429) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 30252957 + ... + 30253093.

Almost surely, 2^4144664425 is an apocalyptic number.

It is an amenable number.

4144664425 is a deficient number, since it is larger than the sum of its proper divisors (1623899089).

4144664425 is a wasteful number, since it uses less digits than its factorization.

4144664425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 226 counting only the distinct ones).

The product of its digits is 368640, while the sum is 40.

The square root of 4144664425 is about 64379.0682209676. The cubic root of 4144664425 is about 1606.3115833808.

The spelling of 4144664425 in words is "four billion, one hundred forty-four million, six hundred sixty-four thousand, four hundred twenty-five".