25056345634613 has 16 divisors (see below), whose sum is σ = 26574209953920. Its totient is φ = 23543371353600.

The previous prime is 25056345634549. The next prime is 25056345634627. The reversal of 25056345634613 is 31643654365052.

It is a cyclic number.

It is not a de Polignac number, because 25056345634613 - 2⁶ = 25056345634549 is a prime.

It is a super-2 number, since 2×25056345634613² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25056345634913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163413578 + ... + 163566836.

It is an arithmetic number, because the mean of its divisors is an integer number (1660888122120).

Almost surely, 2^{25056345634613} is an apocalyptic number.

It is an amenable number.

25056345634613 is a deficient number, since it is larger than the sum of its proper divisors (1517864319307).

25056345634613 is a wasteful number, since it uses less digits than its factorization.

25056345634613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169148.

The product of its (nonzero) digits is 23328000, while the sum is 53.

Adding to 25056345634613 its reverse (31643654365052), we get a palindrome (56699999999665).

The spelling of 25056345634613 in words is "twenty-five trillion, fifty-six billion, three hundred forty-five million, six hundred thirty-four thousand, six hundred thirteen".