25813345566889 has 8 divisors (see below), whose sum is σ = 25878357550080. Its totient is φ = 25748387922816.

The previous prime is 25813345566829. The next prime is 25813345566917. The reversal of 25813345566889 is 98866554331852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25813345566889 - 2²⁹ = 25812808695977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25813345566829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12633417 + ... + 14533750.

It is an arithmetic number, because the mean of its divisors is an integer number (3234794693760).

Almost surely, 2^{25813345566889} is an apocalyptic number.

It is an amenable number.

25813345566889 is a deficient number, since it is larger than the sum of its proper divisors (65011983191).

25813345566889 is a wasteful number, since it uses less digits than its factorization.

25813345566889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27169559.

The product of its digits is 1492992000, while the sum is 73.

The spelling of 25813345566889 in words is "twenty-five trillion, eight hundred thirteen billion, three hundred forty-five million, five hundred sixty-six thousand, eight hundred eighty-nine".