25712117 has 2 divisors, whose sum is σ = 25712118. Its totient is φ = 25712116.

The previous prime is 25712101. The next prime is 25712131. The reversal of 25712117 is 71121752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18957316 + 6754801 = 4354^2 + 2599^2 .

It is a cyclic number.

It is not a de Polignac number, because 25712117 - 2⁴ = 25712101 is a prime.

It is a super-2 number, since 2×25712117² = 1322225921243378, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25712147) 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, 12856058 + 12856059.

It is an arithmetic number, because the mean of its divisors is an integer number (12856059).

Almost surely, 2^25712117 is an apocalyptic number.

It is an amenable number.

25712117 is a deficient number, since it is larger than the sum of its proper divisors (1).

25712117 is an equidigital number, since it uses as much as digits as its factorization.

25712117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 980, while the sum is 26.

The square root of 25712117 is about 5070.7116857498. The cubic root of 25712117 is about 295.1521459739.

Adding to 25712117 its reverse (71121752), we get a palindrome (96833869).

The spelling of 25712117 in words is "twenty-five million, seven hundred twelve thousand, one hundred seventeen".