25686241 has 8 divisors (see below), whose sum is σ = 29955200. Its totient is φ = 22016484.

The previous prime is 25686217. The next prime is 25686263. The reversal of 25686241 is 14268652.

It is not a de Polignac number, because 25686241 - 2¹¹ = 25684193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25686197 and 25686206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25686211) 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 7 ways as a sum of consecutive naturals, for example, 37101 + ... + 37786.

It is an arithmetic number, because the mean of its divisors is an integer number (3744400).

Almost surely, 2^25686241 is an apocalyptic number.

It is an amenable number.

25686241 is a deficient number, since it is larger than the sum of its proper divisors (4268959).

25686241 is an frugal number, since it uses more digits than its factorization.

25686241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74908 (or 74894 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 25686241 is about 5068.1595278760. The cubic root of 25686241 is about 295.0531016158.

The spelling of 25686241 in words is "twenty-five million, six hundred eighty-six thousand, two hundred forty-one".