25512017 has 2 divisors, whose sum is σ = 25512018. Its totient is φ = 25512016.

The previous prime is 25511987. The next prime is 25512077. The reversal of 25512017 is 71021552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25240576 + 271441 = 5024^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 25512017 - 2⁶ = 25511953 is a prime.

It is a super-2 number, since 2×25512017² = 1301726022816578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25511983 and 25512001.

It is not a weakly prime, because it can be changed into another prime (25512077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12756008 + 12756009.

It is an arithmetic number, because the mean of its divisors is an integer number (12756009).

Almost surely, 2^25512017 is an apocalyptic number.

It is an amenable number.

25512017 is a deficient number, since it is larger than the sum of its proper divisors (1).

25512017 is an equidigital number, since it uses as much as digits as its factorization.

25512017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 25512017 is about 5050.9421893346. The cubic root of 25512017 is about 294.3844946999.

Adding to 25512017 its reverse (71021552), we get a palindrome (96533569).

The spelling of 25512017 in words is "twenty-five million, five hundred twelve thousand, seventeen".