25584112849 has 2 divisors, whose sum is σ = 25584112850. Its totient is φ = 25584112848.

The previous prime is 25584112843. The next prime is 25584112871. The reversal of 25584112849 is 94821148552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17070729025 + 8513383824 = 130655^2 + 92268^2 .

It is a cyclic number.

It is not a de Polignac number, because 25584112849 - 2⁵ = 25584112817 is a prime.

It is not a weakly prime, because it can be changed into another prime (25584112843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12792056424 + 12792056425.

It is an arithmetic number, because the mean of its divisors is an integer number (12792056425).

Almost surely, 2^25584112849 is an apocalyptic number.

It is an amenable number.

25584112849 is a deficient number, since it is larger than the sum of its proper divisors (1).

25584112849 is an equidigital number, since it uses as much as digits as its factorization.

25584112849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 921600, while the sum is 49.

The spelling of 25584112849 in words is "twenty-five billion, five hundred eighty-four million, one hundred twelve thousand, eight hundred forty-nine".