842688225 has 24 divisors (see below), whose sum is σ = 1548050720. Its totient is φ = 449433360.

The previous prime is 842688199. The next prime is 842688227. The reversal of 842688225 is 522886248.

842688225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 842688225 - 2⁵ = 842688193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (842688227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 623539 + ... + 624888.

Almost surely, 2^842688225 is an apocalyptic number.

It is an amenable number.

842688225 is a deficient number, since it is larger than the sum of its proper divisors (705362495).

842688225 is a wasteful number, since it uses less digits than its factorization.

842688225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248446 (or 1248435 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The square root of 842688225 is about 29029.0927347032. The cubic root of 842688225 is about 944.5442498780.

The spelling of 842688225 in words is "eight hundred forty-two million, six hundred eighty-eight thousand, two hundred twenty-five".