857025625 has 15 divisors (see below), whose sum is σ = 1071854553. Its totient is φ = 685035000.

The previous prime is 857025623. The next prime is 857025707. The reversal of 857025625 is 526520758.

The square root of 857025625 is 29275.

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

It can be written as a sum of positive squares in 2 ways, for example, as 67190809 + 789834816 = 8197^2 + 28104^2 .

It is not a de Polignac number, because 857025625 - 2¹ = 857025623 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857025623) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 731290 + ... + 732460.

Almost surely, 2^857025625 is an apocalyptic number.

857025625 is the 29275-th square number.

857025625 is the 14638-th centered octagonal number.

It is an amenable number.

857025625 is a deficient number, since it is larger than the sum of its proper divisors (214828928).

857025625 is an frugal number, since it uses more digits than its factorization.

857025625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The cubic root of 857025625 is about 949.8709427639.

The spelling of 857025625 in words is "eight hundred fifty-seven million, twenty-five thousand, six hundred twenty-five".