281325006 has 48 divisors (see below), whose sum is σ = 650871936. Its totient is φ = 87606288.

The previous prime is 281324987. The next prime is 281325013. The reversal of 281325006 is 600523182.

281325006 is a `hidden beast` number, since 28 + 132 + 500 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9901 + ... + 25703.

It is an arithmetic number, because the mean of its divisors is an integer number (13559832).

Almost surely, 2^281325006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281325006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325435968).

281325006 is an abundant number, since it is smaller than the sum of its proper divisors (369546930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281325006 is a wasteful number, since it uses less digits than its factorization.

281325006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15877 (or 15874 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 281325006 is about 16772.7459290362. The cubic root of 281325006 is about 655.2435867321.

Adding to 281325006 its reverse (600523182), we get a palindrome (881848188).

The spelling of 281325006 in words is "two hundred eighty-one million, three hundred twenty-five thousand, six".