2856725334225 has 81 divisors (see below), whose sum is σ = 5952463905297. Its totient is φ = 1305850452480.

The previous prime is 2856725334217. The next prime is 2856725334289. The reversal of 2856725334225 is 5224335276582.

The square root of 2856725334225 is 1690185.

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

2856725334225 is a `hidden beast` number, since 2 + 8 + 5 + 67 + 2 + 533 + 42 + 2 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11984337729 + 2844740996496 = 109473^2 + 1686636^2 .

It is not a de Polignac number, because 2856725334225 - 2³ = 2856725334217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 177461377 + ... + 177477473.

Almost surely, 2^{2856725334225} is an apocalyptic number.

2856725334225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2856725334225 is the 1690185-th square number.

2856725334225 is the 845093-rd centered octagonal number.

It is an amenable number.

2856725334225 is an abundant number, since it is smaller than the sum of its proper divisors (3095738571072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2856725334225 is an frugal number, since it uses more digits than its factorization.

2856725334225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32224 (or 16112 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 54.

The spelling of 2856725334225 in words is "two trillion, eight hundred fifty-six billion, seven hundred twenty-five million, three hundred thirty-four thousand, two hundred twenty-five".