800118212825 has 24 divisors (see below), whose sum is σ = 1051537619160. Its totient is φ = 601851571200.

The previous prime is 800118212807. The next prime is 800118212833. The reversal of 800118212825 is 528212811008.

It can be written as a sum of positive squares in 12 ways, for example, as 212008677136 + 588109535689 = 460444^2 + 766883^2 .

It is not a de Polignac number, because 800118212825 - 2²⁸ = 799849777369 is a prime.

It is a Curzon 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, 488030 + ... + 1355879.

It is an arithmetic number, because the mean of its divisors is an integer number (43814067465).

Almost surely, 2^800118212825 is an apocalyptic number.

800118212825 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

800118212825 is a deficient number, since it is larger than the sum of its proper divisors (251419406335).

800118212825 is a wasteful number, since it uses less digits than its factorization.

800118212825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844957 (or 1844952 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 38.

The spelling of 800118212825 in words is "eight hundred billion, one hundred eighteen million, two hundred twelve thousand, eight hundred twenty-five".