878971876225 has 9 divisors (see below), whose sum is σ = 1089930939267. Its totient is φ = 703173750840.

The previous prime is 878971876217. The next prime is 878971876261. The reversal of 878971876225 is 522678179878.

It is a happy number.

The square root of 878971876225 is 937535.

It is a perfect power (a square), and thus also a powerful number.

878971876225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 316429875441 + 562542000784 = 562521^2 + 750028^2 .

It is not a de Polignac number, because 878971876225 - 2³ = 878971876217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4593922 + ... + 4781428.

Almost surely, 2^878971876225 is an apocalyptic number.

878971876225 is the 937535-th square number.

878971876225 is the 468768-th centered octagonal number.

It is an amenable number.

878971876225 is a deficient number, since it is larger than the sum of its proper divisors (210959063042).

878971876225 is an frugal number, since it uses more digits than its factorization.

878971876225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375024 (or 187512 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 70.

The spelling of 878971876225 in words is "eight hundred seventy-eight billion, nine hundred seventy-one million, eight hundred seventy-six thousand, two hundred twenty-five".