25990951289 has 8 divisors (see below), whose sum is σ = 26152865280. Its totient is φ = 25829306800.

The previous prime is 25990951267. The next prime is 25990951297. The reversal of 25990951289 is 98215909952.

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 25990951289 - 2⁸ = 25990951033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25990951229) 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, 127859 + ... + 261399.

It is an arithmetic number, because the mean of its divisors is an integer number (3269108160).

Almost surely, 2^25990951289 is an apocalyptic number.

It is an amenable number.

25990951289 is a deficient number, since it is larger than the sum of its proper divisors (161913991).

25990951289 is a wasteful number, since it uses less digits than its factorization.

25990951289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134751.

The product of its (nonzero) digits is 5248800, while the sum is 59.

The spelling of 25990951289 in words is "twenty-five billion, nine hundred ninety million, nine hundred fifty-one thousand, two hundred eighty-nine".