25966523 has 4 divisors (see below), whose sum is σ = 28327128. Its totient is φ = 23605920.

The previous prime is 25966511. The next prime is 25966529. The reversal of 25966523 is 32566952.

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 25966523 - 2¹² = 25962427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25966529) 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, 1180286 + ... + 1180307.

It is an arithmetic number, because the mean of its divisors is an integer number (7081782).

Almost surely, 2^25966523 is an apocalyptic number.

25966523 is a deficient number, since it is larger than the sum of its proper divisors (2360605).

25966523 is a wasteful number, since it uses less digits than its factorization.

25966523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360604.

The product of its digits is 97200, while the sum is 38.

The square root of 25966523 is about 5095.7357663050. The cubic root of 25966523 is about 296.1224041783.

It can be divided in two parts, 2596 and 6523, that added together give a palindrome (9119).

The spelling of 25966523 in words is "twenty-five million, nine hundred sixty-six thousand, five hundred twenty-three".