25172023 has 2 divisors, whose sum is σ = 25172024. Its totient is φ = 25172022.

The previous prime is 25172009. The next prime is 25172027. The reversal of 25172023 is 32027152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25172023 - 2⁹ = 25171511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25171985 and 25172003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25172027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12586011 + 12586012.

It is an arithmetic number, because the mean of its divisors is an integer number (12586012).

Almost surely, 2^25172023 is an apocalyptic number.

25172023 is a deficient number, since it is larger than the sum of its proper divisors (1).

25172023 is an equidigital number, since it uses as much as digits as its factorization.

25172023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 25172023 is about 5017.1728094615. The cubic root of 25172023 is about 293.0709058166.

Adding to 25172023 its reverse (32027152), we get a palindrome (57199175).

The spelling of 25172023 in words is "twenty-five million, one hundred seventy-two thousand, twenty-three".