12895281 has 63 divisors (see below), whose sum is σ = 23736681. Its totient is φ = 6980904.

The previous prime is 12895261. The next prime is 12895283. The reversal of 12895281 is 18259821.

The square root of 12895281 is 3591.

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

12895281 is a `hidden beast` number, since 128 + 9 + 528 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (63).

It is not a de Polignac number, because 12895281 - 2¹¹ = 12893233 is a prime.

It is a super-2 number, since 2×12895281² = 332576544137922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12895283) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 678690 + ... + 678708.

Almost surely, 2^12895281 is an apocalyptic number.

12895281 is the 3591-st square number.

12895281 is the 1796-th centered octagonal number.

It is an amenable number.

12895281 is a deficient number, since it is larger than the sum of its proper divisors (10841400).

12895281 is an frugal number, since it uses more digits than its factorization.

12895281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 29 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The cubic root of 12895281 is about 234.5004084050.

Multiplying 12895281 by its sum of digits (36), we get a square (464230116 = 21546²).

The spelling of 12895281 in words is "twelve million, eight hundred ninety-five thousand, two hundred eighty-one".