25231223 has 2 divisors, whose sum is σ = 25231224. Its totient is φ = 25231222.

The previous prime is 25231201. The next prime is 25231231. The reversal of 25231223 is 32213252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25231223 - 2⁸ = 25230967 is a prime.

It is a super-2 number, since 2×25231223² = 1273229228151458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25231195 and 25231204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25230223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12615611 + 12615612.

It is an arithmetic number, because the mean of its divisors is an integer number (12615612).

Almost surely, 2^25231223 is an apocalyptic number.

25231223 is a deficient number, since it is larger than the sum of its proper divisors (1).

25231223 is an equidigital number, since it uses as much as digits as its factorization.

25231223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 20.

The square root of 25231223 is about 5023.0690817467. The cubic root of 25231223 is about 293.3004756871.

Adding to 25231223 its reverse (32213252), we get a palindrome (57444475).

The spelling of 25231223 in words is "twenty-five million, two hundred thirty-one thousand, two hundred twenty-three".