25906434007 has 2 divisors, whose sum is σ = 25906434008. Its totient is φ = 25906434006.

The previous prime is 25906433911. The next prime is 25906434017. The reversal of 25906434007 is 70043460952.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25906434007 - 2¹⁵ = 25906401239 is a prime.

It is a super-2 number, since 2×25906434007² (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 (25906434017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12953217003 + 12953217004.

It is an arithmetic number, because the mean of its divisors is an integer number (12953217004).

Almost surely, 2^25906434007 is an apocalyptic number.

25906434007 is a deficient number, since it is larger than the sum of its proper divisors (1).

25906434007 is an equidigital number, since it uses as much as digits as its factorization.

25906434007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

Adding to 25906434007 its reverse (70043460952), we get a palindrome (95949894959).

The spelling of 25906434007 in words is "twenty-five billion, nine hundred six million, four hundred thirty-four thousand, seven".