25872281 has 4 divisors (see below), whose sum is σ = 27234000. Its totient is φ = 24510564.

The previous prime is 25872277. The next prime is 25872289. The reversal of 25872281 is 18227852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25872281 - 2² = 25872277 is a prime.

It is a super-2 number, since 2×25872281² = 1338749848285922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25872289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680831 + ... + 680868.

It is an arithmetic number, because the mean of its divisors is an integer number (6808500).

Almost surely, 2^25872281 is an apocalyptic number.

It is an amenable number.

25872281 is a deficient number, since it is larger than the sum of its proper divisors (1361719).

25872281 is a wasteful number, since it uses less digits than its factorization.

25872281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361718.

The product of its digits is 17920, while the sum is 35.

The square root of 25872281 is about 5086.4802172032. The cubic root of 25872281 is about 295.7637244323.

The spelling of 25872281 in words is "twenty-five million, eight hundred seventy-two thousand, two hundred eighty-one".