25520434420067 has 2 divisors, whose sum is σ = 25520434420068. Its totient is φ = 25520434420066.

The previous prime is 25520434420003. The next prime is 25520434420079. The reversal of 25520434420067 is 76002443402552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25520434420067 - 2⁶ = 25520434420003 is a prime.

It is a super-2 number, since 2×25520434420067² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25520434620067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12760217210033 + 12760217210034.

It is an arithmetic number, because the mean of its divisors is an integer number (12760217210034).

Almost surely, 2^{25520434420067} is an apocalyptic number.

25520434420067 is a deficient number, since it is larger than the sum of its proper divisors (1).

25520434420067 is an equidigital number, since it uses as much as digits as its factorization.

25520434420067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1612800, while the sum is 44.

The spelling of 25520434420067 in words is "twenty-five trillion, five hundred twenty billion, four hundred thirty-four million, four hundred twenty thousand, sixty-seven".