25517113 has 2 divisors, whose sum is σ = 25517114. Its totient is φ = 25517112.

The previous prime is 25517083. The next prime is 25517137. The reversal of 25517113 is 31171552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25431849 + 85264 = 5043^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 25517113 - 2¹⁷ = 25386041 is a prime.

It is a super-2 number, since 2×25517113² = 1302246111709538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25517183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12758556 + 12758557.

It is an arithmetic number, because the mean of its divisors is an integer number (12758557).

Almost surely, 2^25517113 is an apocalyptic number.

It is an amenable number.

25517113 is a deficient number, since it is larger than the sum of its proper divisors (1).

25517113 is an equidigital number, since it uses as much as digits as its factorization.

25517113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1050, while the sum is 25.

The square root of 25517113 is about 5051.4466244829. The cubic root of 25517113 is about 294.4040943982.

Adding to 25517113 its reverse (31171552), we get a palindrome (56688665).

The spelling of 25517113 in words is "twenty-five million, five hundred seventeen thousand, one hundred thirteen".