285898743025 has 27 divisors (see below), whose sum is σ = 412421346369. Its totient is φ = 196032019680.

The previous prime is 285898742951. The next prime is 285898743029. The reversal of 285898743025 is 520347898582.

The square root of 285898743025 is 534695.

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

It can be written as a sum of positive squares in 4 ways, for example, as 102036163761 + 183862579264 = 319431^2 + 428792^2 .

It is not a de Polignac number, because 285898743025 - 2¹⁵ = 285898710257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285898743029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18706687 + ... + 18721963.

Almost surely, 2^285898743025 is an apocalyptic number.

285898743025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

285898743025 is the 534695-th square number.

285898743025 is the 267348-th centered octagonal number.

It is an amenable number.

285898743025 is a deficient number, since it is larger than the sum of its proper divisors (126522603344).

285898743025 is an frugal number, since it uses more digits than its factorization.

285898743025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30578 (or 15289 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 61.

The spelling of 285898743025 in words is "two hundred eighty-five billion, eight hundred ninety-eight million, seven hundred forty-three thousand, twenty-five".