8381025 has 27 divisors (see below), whose sum is σ = 15089529. Its totient is φ = 4446720.

The previous prime is 8381003. The next prime is 8381047. The reversal of 8381025 is 5201838.

It is a happy number.

The square root of 8381025 is 2895.

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

8381025 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8381003) and next prime (8381047).

It can be written as a sum of positive squares in 4 ways, for example, as 1347921 + 7033104 = 1161^2 + 2652^2 .

It is not a de Polignac number, because 8381025 - 2²¹ = 6283873 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8381025.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 43329 + ... + 43521.

Almost surely, 2^8381025 is an apocalyptic number.

8381025 is the 2895-th square number.

8381025 is the 1448-th centered octagonal number.

It is an amenable number.

8381025 is a deficient number, since it is larger than the sum of its proper divisors (6708504).

8381025 is a wasteful number, since it uses less digits than its factorization.

8381025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The cubic root of 8381025 is about 203.1260915129.

The spelling of 8381025 in words is "eight million, three hundred eighty-one thousand, twenty-five".