25986068989 has 8 divisors (see below), whose sum is σ = 26127041720. Its totient is φ = 25845474816.

The previous prime is 25986068971. The next prime is 25986069007. The reversal of 25986068989 is 98986068952.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25986068971) and next prime (25986069007).

It can be written as a sum of positive squares in 4 ways, for example, as 10321544025 + 15664524964 = 101595^2 + 125158^2 .

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 25986068989 - 2⁹ = 25986068477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25186068989) 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, 43567 + ... + 232099.

It is an arithmetic number, because the mean of its divisors is an integer number (3265880215).

Almost surely, 2^25986068989 is an apocalyptic number.

It is an amenable number.

25986068989 is a deficient number, since it is larger than the sum of its proper divisors (140972731).

25986068989 is a wasteful number, since it uses less digits than its factorization.

25986068989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189279.

The product of its (nonzero) digits is 134369280, while the sum is 70.

The spelling of 25986068989 in words is "twenty-five billion, nine hundred eighty-six million, sixty-eight thousand, nine hundred eighty-nine".