284861025 has 36 divisors (see below), whose sum is σ = 522101008. Its totient is φ = 148387680.

The previous prime is 284861011. The next prime is 284861069. The reversal of 284861025 is 520168482.

It is not a de Polignac number, because 284861025 - 2⁴ = 284861009 is a prime.

It is a super-3 number, since 3×284861025³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5047 + ... + 24396.

Almost surely, 2^284861025 is an apocalyptic number.

284861025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

284861025 is a deficient number, since it is larger than the sum of its proper divisors (237239983).

284861025 is a wasteful number, since it uses less digits than its factorization.

284861025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29502 (or 29494 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 284861025 is about 16877.8264299643. The cubic root of 284861025 is about 657.9774515482.

The spelling of 284861025 in words is "two hundred eighty-four million, eight hundred sixty-one thousand, twenty-five".