25271065 has 4 divisors (see below), whose sum is σ = 30325284. Its totient is φ = 20216848.

The previous prime is 25271033. The next prime is 25271069. The reversal of 25271065 is 56017252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16556761 + 8714304 = 4069^2 + 2952^2 .

It is a cyclic number.

It is not a de Polignac number, because 25271065 - 2⁵ = 25271033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25271069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2527102 + ... + 2527111.

It is an arithmetic number, because the mean of its divisors is an integer number (7581321).

Almost surely, 2^25271065 is an apocalyptic number.

It is an amenable number.

25271065 is a deficient number, since it is larger than the sum of its proper divisors (5054219).

25271065 is an equidigital number, since it uses as much as digits as its factorization.

25271065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054218.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 25271065 is about 5027.0334194234. The cubic root of 25271065 is about 293.4547756734.

It can be divided in two parts, 252 and 71065, that added together give a palindrome (71317).

The spelling of 25271065 in words is "twenty-five million, two hundred seventy-one thousand, sixty-five".