285888049225 has 9 divisors (see below), whose sum is σ = 354504496117. Its totient is φ = 228708300640.

The previous prime is 285888049199. The next prime is 285888049229. The reversal of 285888049225 is 522940888582.

The square root of 285888049225 is 534685.

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 15442287289 + 270445761936 = 124267^2 + 520044^2 .

It is not a de Polignac number, because 285888049225 - 2²¹ = 285885952073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285888049229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2619957 + ... + 2726893.

Almost surely, 2^285888049225 is an apocalyptic number.

285888049225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

285888049225 is the 534685-th square number.

285888049225 is the 267343-rd centered octagonal number.

It is an amenable number.

285888049225 is a deficient number, since it is larger than the sum of its proper divisors (68616446892).

285888049225 is an frugal number, since it uses more digits than its factorization.

285888049225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213884 (or 106942 counting only the distinct ones).

The product of its (nonzero) digits is 29491200, while the sum is 61.

The spelling of 285888049225 in words is "two hundred eighty-five billion, eight hundred eighty-eight million, forty-nine thousand, two hundred twenty-five".