25223629 has 2 divisors, whose sum is σ = 25223630. Its totient is φ = 25223628.

The previous prime is 25223593. The next prime is 25223633. The reversal of 25223629 is 92632252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24700900 + 522729 = 4970^2 + 723^2 .

It is a cyclic number.

It is not a de Polignac number, because 25223629 - 2⁷ = 25223501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25223629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25223669) 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, 12611814 + 12611815.

It is an arithmetic number, because the mean of its divisors is an integer number (12611815).

Almost surely, 2^25223629 is an apocalyptic number.

It is an amenable number.

25223629 is a deficient number, since it is larger than the sum of its proper divisors (1).

25223629 is an equidigital number, since it uses as much as digits as its factorization.

25223629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 25223629 is about 5022.3131125011. The cubic root of 25223629 is about 293.2710472378.

It can be divided in two parts, 25223 and 629, that added together give a palindrome (25852).

The spelling of 25223629 in words is "twenty-five million, two hundred twenty-three thousand, six hundred twenty-nine".