25251223 has 2 divisors, whose sum is σ = 25251224. Its totient is φ = 25251222.

The previous prime is 25251181. The next prime is 25251227. The reversal of 25251223 is 32215252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25251223 - 2²¹ = 23154071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25251194 and 25251203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25251227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12625611 + 12625612.

It is an arithmetic number, because the mean of its divisors is an integer number (12625612).

Almost surely, 2^25251223 is an apocalyptic number.

25251223 is a deficient number, since it is larger than the sum of its proper divisors (1).

25251223 is an equidigital number, since it uses as much as digits as its factorization.

25251223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 22.

The square root of 25251223 is about 5025.0595021353. The cubic root of 25251223 is about 293.3779519192.

Adding to 25251223 its reverse (32215252), we get a palindrome (57466475).

The spelling of 25251223 in words is "twenty-five million, two hundred fifty-one thousand, two hundred twenty-three".