25978426967 has 2 divisors, whose sum is σ = 25978426968. Its totient is φ = 25978426966.

The previous prime is 25978426949. The next prime is 25978426973. The reversal of 25978426967 is 76962487952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25978426967 - 2²⁴ = 25961649751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25978426987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12989213483 + 12989213484.

It is an arithmetic number, because the mean of its divisors is an integer number (12989213484).

Almost surely, 2^25978426967 is an apocalyptic number.

25978426967 is a deficient number, since it is larger than the sum of its proper divisors (1).

25978426967 is an equidigital number, since it uses as much as digits as its factorization.

25978426967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91445760, while the sum is 65.

The spelling of 25978426967 in words is "twenty-five billion, nine hundred seventy-eight million, four hundred twenty-six thousand, nine hundred sixty-seven".