4438890625 has 63 divisors (see below), whose sum is σ = 6158300079. Its totient is φ = 3198000000.

The previous prime is 4438890611. The next prime is 4438890641. The reversal of 4438890625 is 5260988344.

The square root of 4438890625 is 66625.

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

It can be written as a sum of positive squares in 31 ways, for example, as 1394499649 + 3044390976 = 37343^2 + 55176^2 .

It is not a de Polignac number, because 4438890625 - 2¹³ = 4438882433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 108265605 + ... + 108265645.

Almost surely, 2^4438890625 is an apocalyptic number.

4438890625 is the 66625-th square number.

4438890625 is the 33313-rd centered octagonal number.

It is an amenable number.

4438890625 is a deficient number, since it is larger than the sum of its proper divisors (1719409454).

4438890625 is an frugal number, since it uses more digits than its factorization.

4438890625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The cubic root of 4438890625 is about 1643.4562525973.

Multiplying 4438890625 by its sum of digits (49), we get a square (217505640625 = 466375²).

The spelling of 4438890625 in words is "four billion, four hundred thirty-eight million, eight hundred ninety thousand, six hundred twenty-five".