25548013 has 4 divisors (see below), whose sum is σ = 25743168. Its totient is φ = 25352860.

The previous prime is 25547953. The next prime is 25548049. The reversal of 25548013 is 31084552.

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 a de Polignac number, because none of the positive numbers 2^k-25548013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25548053) 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, 97381 + ... + 97642.

It is an arithmetic number, because the mean of its divisors is an integer number (6435792).

Almost surely, 2^25548013 is an apocalyptic number.

It is an amenable number.

25548013 is a deficient number, since it is larger than the sum of its proper divisors (195155).

25548013 is a wasteful number, since it uses less digits than its factorization.

25548013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195154.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 25548013 is about 5054.5042289032. The cubic root of 25548013 is about 294.5228828748.

The spelling of 25548013 in words is "twenty-five million, five hundred forty-eight thousand, thirteen".