25660241 has 6 divisors (see below), whose sum is σ = 27082242. Its totient is φ = 24309360.

The previous prime is 25660231. The next prime is 25660247. The reversal of 25660241 is 14206652.

It can be written as a sum of positive squares in only one way, i.e., 24403600 + 1256641 = 4940^2 + 1121^2 .

It is not a de Polignac number, because 25660241 - 2²² = 21465937 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 25660241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25660247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35180 + ... + 35901.

It is an arithmetic number, because the mean of its divisors is an integer number (4513707).

Almost surely, 2^25660241 is an apocalyptic number.

It is an amenable number.

25660241 is a deficient number, since it is larger than the sum of its proper divisors (1422001).

25660241 is an equidigital number, since it uses as much as digits as its factorization.

25660241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71119 (or 71100 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 25660241 is about 5065.5938447531. The cubic root of 25660241 is about 294.9535156097.

Adding to 25660241 its reverse (14206652), we get a palindrome (39866893).

The spelling of 25660241 in words is "twenty-five million, six hundred sixty thousand, two hundred forty-one".