12881025 has 30 divisors (see below), whose sum is σ = 23863862. Its totient is φ = 6868800.

The previous prime is 12881023. The next prime is 12881041. The reversal of 12881025 is 52018821.

It can be written as a sum of positive squares in 3 ways, for example, as 178929 + 12702096 = 423^2 + 3564^2 .

It is not a de Polignac number, because 12881025 - 2¹ = 12881023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12881025.

It is not an unprimeable number, because it can be changed into a prime (12881023) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1156 + ... + 5205.

Almost surely, 2^12881025 is an apocalyptic number.

12881025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12881025 is a deficient number, since it is larger than the sum of its proper divisors (10982837).

12881025 is an equidigital number, since it uses as much as digits as its factorization.

12881025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383 (or 6369 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 12881025 is about 3589.0144886863. The cubic root of 12881025 is about 234.4139615228.

Adding to 12881025 its reverse (52018821), we get a palindrome (64899846).

The spelling of 12881025 in words is "twelve million, eight hundred eighty-one thousand, twenty-five".