25424420143 has 2 divisors, whose sum is σ = 25424420144. Its totient is φ = 25424420142.

The previous prime is 25424420129. The next prime is 25424420221. The reversal of 25424420143 is 34102442452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25424420143 - 2⁵ = 25424420111 is a prime.

It is a super-2 number, since 2×25424420143² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25424427143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12712210071 + 12712210072.

It is an arithmetic number, because the mean of its divisors is an integer number (12712210072).

Almost surely, 2^25424420143 is an apocalyptic number.

25424420143 is a deficient number, since it is larger than the sum of its proper divisors (1).

25424420143 is an equidigital number, since it uses as much as digits as its factorization.

25424420143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 25424420143 its reverse (34102442452), we get a palindrome (59526862595).

The spelling of 25424420143 in words is "twenty-five billion, four hundred twenty-four million, four hundred twenty thousand, one hundred forty-three".