284025 has 24 divisors (see below), whose sum is σ = 537664. Its totient is φ = 129600.

The previous prime is 284023. The next prime is 284041. The reversal of 284025 is 520482.

It is not a de Polignac number, because 284025 - 2¹ = 284023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 283992 and 284010.

It is not an unprimeable number, because it can be changed into a prime (284023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255 + ... + 795.

2²⁸⁴⁰²⁵ is an apocalyptic number.

284025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

284025 is a deficient number, since it is larger than the sum of its proper divisors (253639).

284025 is a wasteful number, since it uses less digits than its factorization.

284025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 284025 is about 532.9399590948. The cubic root of 284025 is about 65.7333131956.

The spelling of 284025 in words is "two hundred eighty-four thousand, twenty-five".