898776738225 has 18 divisors (see below), whose sum is σ = 1609809002646. Its totient is φ = 479347593600.

The previous prime is 898776738203. The next prime is 898776738239. The reversal of 898776738225 is 522837677898.

898776738225 is a `hidden beast` number, since 89 + 87 + 76 + 7 + 382 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 153798877584 + 744977860641 = 392172^2 + 863121^2 .

It is not a de Polignac number, because 898776738225 - 2¹² = 898776734129 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1997281416 + ... + 1997281865.

Almost surely, 2^898776738225 is an apocalyptic number.

It is an amenable number.

898776738225 is a deficient number, since it is larger than the sum of its proper divisors (711032264421).

898776738225 is a wasteful number, since it uses less digits than its factorization.

898776738225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994563297 (or 3994563289 counting only the distinct ones).

The product of its digits is 568995840, while the sum is 72.

The spelling of 898776738225 in words is "eight hundred ninety-eight billion, seven hundred seventy-six million, seven hundred thirty-eight thousand, two hundred twenty-five".