284957825 has 12 divisors (see below), whose sum is σ = 374133420. Its totient is φ = 214556160.

The previous prime is 284957809. The next prime is 284957899. The reversal of 284957825 is 528759482.

It can be written as a sum of positive squares in 6 ways, for example, as 327184 + 284630641 = 572^2 + 16871^2 .

It is not a de Polignac number, because 284957825 - 2⁴ = 284957809 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334820 + ... + 335669.

It is an arithmetic number, because the mean of its divisors is an integer number (31177785).

Almost surely, 2^284957825 is an apocalyptic number.

284957825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

284957825 is a deficient number, since it is larger than the sum of its proper divisors (89175595).

284957825 is a wasteful number, since it uses less digits than its factorization.

284957825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670516 (or 670511 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 50.

The square root of 284957825 is about 16880.6938542229. The cubic root of 284957825 is about 658.0519732723.

The spelling of 284957825 in words is "two hundred eighty-four million, nine hundred fifty-seven thousand, eight hundred twenty-five".