25887859201 has 2 divisors, whose sum is σ = 25887859202. Its totient is φ = 25887859200.

The previous prime is 25887859177. The next prime is 25887859213. The reversal of 25887859201 is 10295878852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13919280400 + 11968578801 = 117980^2 + 109401^2 .

It is a cyclic number.

It is not a de Polignac number, because 25887859201 - 2¹³ = 25887851009 is a prime.

It is not a weakly prime, because it can be changed into another prime (25887869201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12943929600 + 12943929601.

It is an arithmetic number, because the mean of its divisors is an integer number (12943929601).

Almost surely, 2^25887859201 is an apocalyptic number.

It is an amenable number.

25887859201 is a deficient number, since it is larger than the sum of its proper divisors (1).

25887859201 is an equidigital number, since it uses as much as digits as its factorization.

25887859201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3225600, while the sum is 55.

The spelling of 25887859201 in words is "twenty-five billion, eight hundred eighty-seven million, eight hundred fifty-nine thousand, two hundred one".