4238661025 has 27 divisors (see below), whose sum is σ = 5455579051. Its totient is φ = 3266708480.

The previous prime is 4238660971. The next prime is 4238661079. The reversal of 4238661025 is 5201668324.

The square root of 4238661025 is 65105.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (4238660971) and next prime (4238661079).

It can be written as a sum of positive squares in 13 ways, for example, as 2142486369 + 2096174656 = 46287^2 + 45784^2 .

It is not a de Polignac number, because 4238661025 - 2⁷ = 4238660897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 9440001 + ... + 9440449.

Almost surely, 2^4238661025 is an apocalyptic number.

4238661025 is the 65105-th square number.

4238661025 is the 32553-rd centered octagonal number.

It is an amenable number.

4238661025 is a deficient number, since it is larger than the sum of its proper divisors (1216918026).

4238661025 is an frugal number, since it uses more digits than its factorization.

4238661025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The cubic root of 4238661025 is about 1618.3640734104.

The spelling of 4238661025 in words is "four billion, two hundred thirty-eight million, six hundred sixty-one thousand, twenty-five".