878248378225 has 6 divisors (see below), whose sum is σ = 1089027989030. Its totient is φ = 702598702560.

The previous prime is 878248378193. The next prime is 878248378243. The reversal of 878248378225 is 522873842878.

It can be written as a sum of positive squares in 3 ways, for example, as 37654626304 + 840593751921 = 194048^2 + 916839^2 .

It is not a de Polignac number, because 878248378225 - 2⁵ = 878248378193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17564967540 + ... + 17564967589.

Almost surely, 2^878248378225 is an apocalyptic number.

It is an amenable number.

878248378225 is a deficient number, since it is larger than the sum of its proper divisors (210779610805).

878248378225 is a wasteful number, since it uses less digits than its factorization.

878248378225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35129935139 (or 35129935134 counting only the distinct ones).

The product of its digits is 96337920, while the sum is 64.

The spelling of 878248378225 in words is "eight hundred seventy-eight billion, two hundred forty-eight million, three hundred seventy-eight thousand, two hundred twenty-five".