25280113 has 2 divisors, whose sum is σ = 25280114. Its totient is φ = 25280112.

The previous prime is 25280081. The next prime is 25280137. The reversal of 25280113 is 31108252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22014864 + 3265249 = 4692^2 + 1807^2 .

It is a cyclic number.

It is not a de Polignac number, because 25280113 - 2⁵ = 25280081 is a prime.

It is a super-2 number, since 2×25280113² = 1278168226585538, which contains 22 as substring.

It is equal to p_1582303 and since 25280113 and 1582303 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (25280153) 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 as a sum of consecutive naturals, namely, 12640056 + 12640057.

It is an arithmetic number, because the mean of its divisors is an integer number (12640057).

Almost surely, 2^25280113 is an apocalyptic number.

It is an amenable number.

25280113 is a deficient number, since it is larger than the sum of its proper divisors (1).

25280113 is an equidigital number, since it uses as much as digits as its factorization.

25280113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 25280113 is about 5027.9332732247. The cubic root of 25280113 is about 293.4897941420.

Adding to 25280113 its reverse (31108252), we get a palindrome (56388365).

The spelling of 25280113 in words is "twenty-five million, two hundred eighty thousand, one hundred thirteen".