25713610324221 has 8 divisors (see below), whose sum is σ = 34286773303744. Its totient is φ = 17141427113760.

The previous prime is 25713610324217. The next prime is 25713610324229. The reversal of 25713610324221 is 12242301631752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25713610324221 - 2² = 25713610324217 is a prime.

It is a super-2 number, since 2×25713610324221² (a number of 28 digits) contains 22 as substring.

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 25713610324221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25713610324229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244881025 + ... + 244986006.

It is an arithmetic number, because the mean of its divisors is an integer number (4285846662968).

Almost surely, 2^{25713610324221} is an apocalyptic number.

It is an amenable number.

25713610324221 is a deficient number, since it is larger than the sum of its proper divisors (8573162979523).

25713610324221 is a wasteful number, since it uses less digits than its factorization.

25713610324221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489884531.

The product of its (nonzero) digits is 120960, while the sum is 39.

Adding to 25713610324221 its reverse (12242301631752), we get a palindrome (37955911955973).

The spelling of 25713610324221 in words is "twenty-five trillion, seven hundred thirteen billion, six hundred ten million, three hundred twenty-four thousand, two hundred twenty-one".