825115555281 has 16 divisors (see below), whose sum is σ = 1157446217088. Its totient is φ = 522156182400.

The previous prime is 825115555213. The next prime is 825115555301. The reversal of 825115555281 is 182555511528.

It is not a de Polignac number, because 825115555281 - 2¹³ = 825115547089 is a prime.

It is a super-2 number, since 2×825115555281² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 825115555281.

It is not an unprimeable number, because it can be changed into a prime (825115555681) 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 15 ways as a sum of consecutive naturals, for example, 90647565 + ... + 90656666.

It is an arithmetic number, because the mean of its divisors is an integer number (72340388568).

Almost surely, 2^825115555281 is an apocalyptic number.

It is an amenable number.

825115555281 is a deficient number, since it is larger than the sum of its proper divisors (332330661807).

825115555281 is a wasteful number, since it uses less digits than its factorization.

825115555281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181304312.

The product of its digits is 800000, while the sum is 48.

The spelling of 825115555281 in words is "eight hundred twenty-five billion, one hundred fifteen million, five hundred fifty-five thousand, two hundred eighty-one".