25161223 has 2 divisors, whose sum is σ = 25161224. Its totient is φ = 25161222.

The previous prime is 25161211. The next prime is 25161229. The reversal of 25161223 is 32216152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25161223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25161194 and 25161203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25161229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12580611 + 12580612.

It is an arithmetic number, because the mean of its divisors is an integer number (12580612).

Almost surely, 2^25161223 is an apocalyptic number.

25161223 is a deficient number, since it is larger than the sum of its proper divisors (1).

25161223 is an equidigital number, since it uses as much as digits as its factorization.

25161223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 25161223 is about 5016.0963906209. The cubic root of 25161223 is about 293.0289860159.

Adding to 25161223 its reverse (32216152), we get a palindrome (57377375).

The spelling of 25161223 in words is "twenty-five million, one hundred sixty-one thousand, two hundred twenty-three".