25977018009 has 8 divisors (see below), whose sum is σ = 34675521280. Its totient is φ = 17298263376.

The previous prime is 25977018007. The next prime is 25977018037. The reversal of 25977018009 is 90081077952.

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

It is not a de Polignac number, because 25977018009 - 2¹ = 25977018007 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25977018007) 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 in 7 ways as a sum of consecutive naturals, for example, 4934089 + ... + 4939350.

It is an arithmetic number, because the mean of its divisors is an integer number (4334440160).

Almost surely, 2^25977018009 is an apocalyptic number.

It is an amenable number.

25977018009 is a deficient number, since it is larger than the sum of its proper divisors (8698503271).

25977018009 is an equidigital number, since it uses as much as digits as its factorization.

25977018009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9874319.

The product of its (nonzero) digits is 317520, while the sum is 48.

The spelling of 25977018009 in words is "twenty-five billion, nine hundred seventy-seven million, eighteen thousand, nine".