298853680138225 has 27 divisors (see below), whose sum is σ = 393661516745731. Its totient is φ = 225018135123200.

The previous prime is 298853680138163. The next prime is 298853680138253. The reversal of 298853680138225 is 522831086358892.

The square root of 298853680138225 is 17287385.

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

It can be written as a sum of positive squares in 13 ways, for example, as 128820842905329 + 170032837232896 = 11349927^2 + 13039664^2 .

It is not a de Polignac number, because 298853680138225 - 2¹¹ = 298853680136177 is a prime.

It is a Duffinian number.

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, 1469326035 + ... + 1469529415.

Almost surely, 2^{298853680138225} is an apocalyptic number.

298853680138225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

298853680138225 is the 17287385-th square number.

298853680138225 is the 8643693-rd centered octagonal number.

It is an amenable number.

298853680138225 is a deficient number, since it is larger than the sum of its proper divisors (94807836607506).

298853680138225 is an frugal number, since it uses more digits than its factorization.

298853680138225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406806 (or 203403 counting only the distinct ones).

The product of its (nonzero) digits is 398131200, while the sum is 70.

The spelling of 298853680138225 in words is "two hundred ninety-eight trillion, eight hundred fifty-three billion, six hundred eighty million, one hundred thirty-eight thousand, two hundred twenty-five".