25975950289 has 4 divisors (see below), whose sum is σ = 27105339456. Its totient is φ = 24846561124.

The previous prime is 25975950277. The next prime is 25975950323. The reversal of 25975950289 is 98205957952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25975950289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25975950089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564694549 + ... + 564694594.

It is an arithmetic number, because the mean of its divisors is an integer number (6776334864).

Almost surely, 2^25975950289 is an apocalyptic number.

It is an amenable number.

25975950289 is a deficient number, since it is larger than the sum of its proper divisors (1129389167).

25975950289 is a wasteful number, since it uses less digits than its factorization.

25975950289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129389166.

The product of its (nonzero) digits is 20412000, while the sum is 61.

The spelling of 25975950289 in words is "twenty-five billion, nine hundred seventy-five million, nine hundred fifty thousand, two hundred eighty-nine".