25987466837 has 2 divisors, whose sum is σ = 25987466838. Its totient is φ = 25987466836.

The previous prime is 25987466819. The next prime is 25987466861. The reversal of 25987466837 is 73866478952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20843851876 + 5143614961 = 144374^2 + 71719^2 .

It is a cyclic number.

It is not a de Polignac number, because 25987466837 - 2¹⁰ = 25987465813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25987466137) 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, 12993733418 + 12993733419.

It is an arithmetic number, because the mean of its divisors is an integer number (12993733419).

Almost surely, 2^25987466837 is an apocalyptic number.

It is an amenable number.

25987466837 is a deficient number, since it is larger than the sum of its proper divisors (1).

25987466837 is an equidigital number, since it uses as much as digits as its factorization.

25987466837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121927680, while the sum is 65.

The spelling of 25987466837 in words is "twenty-five billion, nine hundred eighty-seven million, four hundred sixty-six thousand, eight hundred thirty-seven".