864654025 has 9 divisors (see below), whose sum is σ = 1072353333. Its totient is φ = 691605600.

The previous prime is 864653987. The next prime is 864654059. The reversal of 864654025 is 520456468.

The square root of 864654025 is 29405.

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

864654025 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 4 ways, for example, as 42341049 + 822312976 = 6507^2 + 28676^2 .

It is not a de Polignac number, because 864654025 - 2¹⁵ = 864621257 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, 144085 + ... + 149965.

Almost surely, 2^864654025 is an apocalyptic number.

864654025 is the 29405-th square number.

864654025 is the 14703-rd centered octagonal number.

It is an amenable number.

864654025 is a deficient number, since it is larger than the sum of its proper divisors (207699308).

864654025 is an frugal number, since it uses more digits than its factorization.

864654025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11772 (or 5886 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The cubic root of 864654025 is about 952.6808946346.

Multiplying 864654025 by its product of nonzero digits (230400), we get a square (199216287360000 = 14114400²).

The spelling of 864654025 in words is "eight hundred sixty-four million, six hundred fifty-four thousand, twenty-five".