25315223 has 2 divisors, whose sum is σ = 25315224. Its totient is φ = 25315222.

The previous prime is 25315181. The next prime is 25315229. The reversal of 25315223 is 32251352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25315223 - 2⁸ = 25314967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25315229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12657611 + 12657612.

It is an arithmetic number, because the mean of its divisors is an integer number (12657612).

Almost surely, 2^25315223 is an apocalyptic number.

25315223 is a deficient number, since it is larger than the sum of its proper divisors (1).

25315223 is an equidigital number, since it uses as much as digits as its factorization.

25315223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 23.

The square root of 25315223 is about 5031.4235560128. The cubic root of 25315223 is about 293.6256012875.

Adding to 25315223 its reverse (32251352), we get a palindrome (57566575).

The spelling of 25315223 in words is "twenty-five million, three hundred fifteen thousand, two hundred twenty-three".