25220423 has 2 divisors, whose sum is σ = 25220424. Its totient is φ = 25220422.

The previous prime is 25220417. The next prime is 25220431. The reversal of 25220423 is 32402252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25220423 - 2¹⁶ = 25154887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25220395 and 25220404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25222423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12610211 + 12610212.

It is an arithmetic number, because the mean of its divisors is an integer number (12610212).

Almost surely, 2^25220423 is an apocalyptic number.

25220423 is a deficient number, since it is larger than the sum of its proper divisors (1).

25220423 is an equidigital number, since it uses as much as digits as its factorization.

25220423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 25220423 is about 5021.9939267187. The cubic root of 25220423 is about 293.2586214971.

Adding to 25220423 its reverse (32402252), we get a palindrome (57622675).

The spelling of 25220423 in words is "twenty-five million, two hundred twenty thousand, four hundred twenty-three".