25825523 has 4 divisors (see below), whose sum is σ = 25959528. Its totient is φ = 25691520.

The previous prime is 25825517. The next prime is 25825537. The reversal of 25825523 is 32552852.

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 25825523 - 2¹² = 25821427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25825523.

It is not an unprimeable number, because it can be changed into a prime (25825543) 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, 66713 + ... + 67098.

It is an arithmetic number, because the mean of its divisors is an integer number (6489882).

Almost surely, 2^25825523 is an apocalyptic number.

25825523 is a deficient number, since it is larger than the sum of its proper divisors (134005).

25825523 is a wasteful number, since it uses less digits than its factorization.

25825523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134004.

The product of its digits is 24000, while the sum is 32.

The square root of 25825523 is about 5081.8818364854. The cubic root of 25825523 is about 295.5854427715.

The spelling of 25825523 in words is "twenty-five million, eight hundred twenty-five thousand, five hundred twenty-three".