25965523 has 4 divisors (see below), whose sum is σ = 25975768. Its totient is φ = 25955280.

The previous prime is 25965521. The next prime is 25965547. The reversal of 25965523 is 32556952.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25965523 - 2¹ = 25965521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25965521) 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, 1783 + ... + 7423.

It is an arithmetic number, because the mean of its divisors is an integer number (6493942).

Almost surely, 2^25965523 is an apocalyptic number.

25965523 is a deficient number, since it is larger than the sum of its proper divisors (10245).

25965523 is an equidigital number, since it uses as much as digits as its factorization.

25965523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10244.

The product of its digits is 81000, while the sum is 37.

The square root of 25965523 is about 5095.6376441030. The cubic root of 25965523 is about 296.1186027939.

The spelling of 25965523 in words is "twenty-five million, nine hundred sixty-five thousand, five hundred twenty-three".