25848521 has 4 divisors (see below), whose sum is σ = 25867392. Its totient is φ = 25829652.

The previous prime is 25848509. The next prime is 25848523. The reversal of 25848521 is 12584852.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25848521 - 2⁶ = 25848457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25848523) 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, 7205 + ... + 10178.

It is an arithmetic number, because the mean of its divisors is an integer number (6466848).

Almost surely, 2^25848521 is an apocalyptic number.

It is an amenable number.

25848521 is a deficient number, since it is larger than the sum of its proper divisors (18871).

25848521 is a wasteful number, since it uses less digits than its factorization.

25848521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18870.

The product of its digits is 25600, while the sum is 35.

The square root of 25848521 is about 5084.1440774235. The cubic root of 25848521 is about 295.6731577701.

The spelling of 25848521 in words is "twenty-five million, eight hundred forty-eight thousand, five hundred twenty-one".