825613287 has 16 divisors (see below), whose sum is σ = 1127660160. Its totient is φ = 537016032.

The previous prime is 825613259. The next prime is 825613307. The reversal of 825613287 is 782316528.

It is not a de Polignac number, because 825613287 - 2⁸ = 825613031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825613207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134908 + ... + 140894.

It is an arithmetic number, because the mean of its divisors is an integer number (70478760).

Almost surely, 2^825613287 is an apocalyptic number.

825613287 is a deficient number, since it is larger than the sum of its proper divisors (302046873).

825613287 is a wasteful number, since it uses less digits than its factorization.

825613287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7102.

The product of its digits is 161280, while the sum is 42.

The square root of 825613287 is about 28733.4872056978. The cubic root of 825613287 is about 938.1210721254.

The spelling of 825613287 in words is "eight hundred twenty-five million, six hundred thirteen thousand, two hundred eighty-seven".