25424429 has 2 divisors, whose sum is σ = 25424430. Its totient is φ = 25424428.

The previous prime is 25424419. The next prime is 25424447. The reversal of 25424429 is 92442452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20702500 + 4721929 = 4550^2 + 2173^2 .

It is a cyclic number.

It is not a de Polignac number, because 25424429 - 2⁸ = 25424173 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_1590719 and since 25424429 and 1590719 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 25424395 and 25424404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25424419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12712214 + 12712215.

It is an arithmetic number, because the mean of its divisors is an integer number (12712215).

Almost surely, 2^25424429 is an apocalyptic number.

It is an amenable number.

25424429 is a deficient number, since it is larger than the sum of its proper divisors (1).

25424429 is an equidigital number, since it uses as much as digits as its factorization.

25424429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 32.

The square root of 25424429 is about 5042.2642731217. The cubic root of 25424429 is about 294.0472142539.

The spelling of 25424429 in words is "twenty-five million, four hundred twenty-four thousand, four hundred twenty-nine".