8280025 has 24 divisors (see below), whose sum is σ = 11240600. Its totient is φ = 6013440.

The previous prime is 8280011. The next prime is 8280043. The reversal of 8280025 is 5200828.

It can be written as a sum of positive squares in 12 ways, for example, as 2442969 + 5837056 = 1563^2 + 2416^2 .

It is not a de Polignac number, because 8280025 - 2¹⁵ = 8247257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23551 + ... + 23899.

Almost surely, 2^8280025 is an apocalyptic number.

It is an amenable number.

8280025 is a deficient number, since it is larger than the sum of its proper divisors (2960575).

8280025 is a wasteful number, since it uses less digits than its factorization.

8280025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 8280025 is about 2877.5032580346. The cubic root of 8280025 is about 202.3068319994.

The spelling of 8280025 in words is "eight million, two hundred eighty thousand, twenty-five".