25965939 has 4 divisors (see below), whose sum is σ = 34621256. Its totient is φ = 17310624.

The previous prime is 25965923. The next prime is 25965943. The reversal of 25965939 is 93956952.

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

It is not a de Polignac number, because 25965939 - 2⁴ = 25965923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25965439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4327654 + ... + 4327659.

It is an arithmetic number, because the mean of its divisors is an integer number (8655314).

Almost surely, 2^25965939 is an apocalyptic number.

25965939 is a deficient number, since it is larger than the sum of its proper divisors (8655317).

25965939 is an equidigital number, since it uses as much as digits as its factorization.

25965939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655316.

The product of its digits is 656100, while the sum is 48.

The square root of 25965939 is about 5095.6784631686. The cubic root of 25965939 is about 296.1201841817.

The spelling of 25965939 in words is "twenty-five million, nine hundred sixty-five thousand, nine hundred thirty-nine".