64832529978225 has 27 divisors (see below), whose sum is σ = 116122481132619. Its totient is φ = 34577284906800.

The previous prime is 64832529978179. The next prime is 64832529978317. The reversal of 64832529978225 is 52287992523846.

The square root of 64832529978225 is 8051865.

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

64832529978225 is a `hidden beast` number, since 6 + 4 + 8 + 3 + 2 + 529 + 9 + 78 + 2 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23339710792161 + 41492819186064 = 4831119^2 + 6441492^2 .

It is not a de Polignac number, because 64832529978225 - 2²⁷ = 64832395760497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 120509580 + ... + 121046370.

Almost surely, 2^{64832529978225} is an apocalyptic number.

64832529978225 is the 8051865-th square number.

64832529978225 is the 4025933-rd centered octagonal number.

It is an amenable number.

64832529978225 is a deficient number, since it is larger than the sum of its proper divisors (51289951154394).

64832529978225 is an frugal number, since it uses more digits than its factorization.

64832529978225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073598 (or 536799 counting only the distinct ones).

The product of its digits is 1045094400, while the sum is 72.

The spelling of 64832529978225 in words is "sixty-four trillion, eight hundred thirty-two billion, five hundred twenty-nine million, nine hundred seventy-eight thousand, two hundred twenty-five".