815632485 has 16 divisors (see below), whose sum is σ = 1305452160. Its totient is φ = 434857280.

The previous prime is 815632439. The next prime is 815632487. The reversal of 815632485 is 584236518.

It is not a de Polignac number, because 815632485 - 2¹⁰ = 815631461 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815632487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48475 + ... + 63095.

It is an arithmetic number, because the mean of its divisors is an integer number (81590760).

Almost surely, 2^815632485 is an apocalyptic number.

It is an amenable number.

815632485 is a deficient number, since it is larger than the sum of its proper divisors (489819675).

815632485 is a wasteful number, since it uses less digits than its factorization.

815632485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18348.

The product of its digits is 230400, while the sum is 42.

The square root of 815632485 is about 28559.2801905090. The cubic root of 815632485 is about 934.3254344986.

It can be divided in two parts, 81563 and 2485, that added together give a palindrome (84048).

The spelling of 815632485 in words is "eight hundred fifteen million, six hundred thirty-two thousand, four hundred eighty-five".