858986044225 has 9 divisors (see below), whose sum is σ = 1065148441123. Its totient is φ = 687185128120.

The previous prime is 858986044201. The next prime is 858986044247. The reversal of 858986044225 is 522440689858.

The square root of 858986044225 is 926815.

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

It can be written as a sum of positive squares in only one way, i.e., 309234975921 + 549751068304 = 556089^2 + 741452^2 .

It is not a de Polignac number, because 858986044225 - 2³⁷ = 721547090753 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, 4541394 + ... + 4726756.

Almost surely, 2^858986044225 is an apocalyptic number.

858986044225 is the 926815-th square number.

858986044225 is the 463408-th centered octagonal number.

It is an amenable number.

858986044225 is a deficient number, since it is larger than the sum of its proper divisors (206162396898).

858986044225 is an frugal number, since it uses more digits than its factorization.

858986044225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370736 (or 185368 counting only the distinct ones).

The product of its (nonzero) digits is 44236800, while the sum is 61.

The spelling of 858986044225 in words is "eight hundred fifty-eight billion, nine hundred eighty-six million, forty-four thousand, two hundred twenty-five".