25867860001 has 2 divisors, whose sum is σ = 25867860002. Its totient is φ = 25867860000.

The previous prime is 25867859951. The next prime is 25867860013. The reversal of 25867860001 is 10006876852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21141160000 + 4726700001 = 145400^2 + 68751^2 .

It is a cyclic number.

It is not a de Polignac number, because 25867860001 - 2⁷ = 25867859873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25867860001.

It is not a weakly prime, because it can be changed into another prime (25867860071) 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, 12933930000 + 12933930001.

It is an arithmetic number, because the mean of its divisors is an integer number (12933930001).

Almost surely, 2^25867860001 is an apocalyptic number.

It is an amenable number.

25867860001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25867860001 is an equidigital number, since it uses as much as digits as its factorization.

25867860001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 25867860001 in words is "twenty-five billion, eight hundred sixty-seven million, eight hundred sixty thousand, one".