25959971 has 4 divisors (see below), whose sum is σ = 26001744. Its totient is φ = 25918200.

The previous prime is 25959961. The next prime is 25959979. The reversal of 25959971 is 17995952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25959971 - 2¹⁴ = 25943587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25959979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19940 + ... + 21201.

It is an arithmetic number, because the mean of its divisors is an integer number (6500436).

Almost surely, 2^25959971 is an apocalyptic number.

25959971 is a deficient number, since it is larger than the sum of its proper divisors (41773).

25959971 is an equidigital number, since it uses as much as digits as its factorization.

25959971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41772.

The product of its digits is 255150, while the sum is 47.

The square root of 25959971 is about 5095.0928352681. The cubic root of 25959971 is about 296.0974957324.

The spelling of 25959971 in words is "twenty-five million, nine hundred fifty-nine thousand, nine hundred seventy-one".