281882825 has 48 divisors (see below), whose sum is σ = 424258560. Its totient is φ = 181600320.

The previous prime is 281882801. The next prime is 281882837. The reversal of 281882825 is 528288182.

It is not a de Polignac number, because 281882825 - 2¹⁸ = 281620681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 236882 + ... + 238068.

It is an arithmetic number, because the mean of its divisors is an integer number (8838720).

Almost surely, 2^281882825 is an apocalyptic number.

281882825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

281882825 is a deficient number, since it is larger than the sum of its proper divisors (142375735).

281882825 is a wasteful number, since it uses less digits than its factorization.

281882825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1281 counting only the distinct ones).

The product of its digits is 163840, while the sum is 44.

The square root of 281882825 is about 16789.3664264022. The cubic root of 281882825 is about 655.6763791738.

It can be divided in two parts, 28188 and 2825, that added together give a palindrome (31013).

The spelling of 281882825 in words is "two hundred eighty-one million, eight hundred eighty-two thousand, eight hundred twenty-five".