25617023 has 2 divisors, whose sum is σ = 25617024. Its totient is φ = 25617022.

The previous prime is 25617019. The next prime is 25617041. The reversal of 25617023 is 32071652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25617023 - 2² = 25617019 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 25616983 and 25617001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25617323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12808511 + 12808512.

It is an arithmetic number, because the mean of its divisors is an integer number (12808512).

Almost surely, 2^25617023 is an apocalyptic number.

25617023 is a deficient number, since it is larger than the sum of its proper divisors (1).

25617023 is an equidigital number, since it uses as much as digits as its factorization.

25617023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 25617023 is about 5061.3262096016. The cubic root of 25617023 is about 294.7878317378.

Adding to 25617023 its reverse (32071652), we get a palindrome (57688675).

The spelling of 25617023 in words is "twenty-five million, six hundred seventeen thousand, twenty-three".