25665113 has 2 divisors, whose sum is σ = 25665114. Its totient is φ = 25665112.

The previous prime is 25665103. The next prime is 25665131. The reversal of 25665113 is 31156652.

Together with next prime (25665131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25270729 + 394384 = 5027^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 25665113 - 2⁴ = 25665097 is a prime.

It is not a weakly prime, because it can be changed into another prime (25665103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12832556 + 12832557.

It is an arithmetic number, because the mean of its divisors is an integer number (12832557).

Almost surely, 2^25665113 is an apocalyptic number.

It is an amenable number.

25665113 is a deficient number, since it is larger than the sum of its proper divisors (1).

25665113 is an equidigital number, since it uses as much as digits as its factorization.

25665113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 29.

The square root of 25665113 is about 5066.0747132272. The cubic root of 25665113 is about 294.9721816151.

The spelling of 25665113 in words is "twenty-five million, six hundred sixty-five thousand, one hundred thirteen".