25621713 has 12 divisors (see below), whose sum is σ = 39856180. Its totient is φ = 15767136.

The previous prime is 25621711. The next prime is 25621727. The reversal of 25621713 is 31712652.

It is a happy number.

25621713 is a `hidden beast` number, since 25 + 621 + 7 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16184529 + 9437184 = 4023^2 + 3072^2 .

It is not a de Polignac number, because 25621713 - 2¹ = 25621711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25621711) 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 11 ways as a sum of consecutive naturals, for example, 109378 + ... + 109611.

Almost surely, 2^25621713 is an apocalyptic number.

It is an amenable number.

25621713 is a deficient number, since it is larger than the sum of its proper divisors (14234467).

25621713 is a wasteful number, since it uses less digits than its factorization.

25621713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219008 (or 219005 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 25621713 is about 5061.7895056986. The cubic root of 25621713 is about 294.8058206947.

The spelling of 25621713 in words is "twenty-five million, six hundred twenty-one thousand, seven hundred thirteen".