25105661136046 has 8 divisors (see below), whose sum is σ = 39873697098480. Its totient is φ = 11814428769888.

The previous prime is 25105661136001. The next prime is 25105661136047. The reversal of 25105661136046 is 64063116650152.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 25105661135987 and 25105661136005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25105661136047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369200899026 + ... + 369200899093.

It is an arithmetic number, because the mean of its divisors is an integer number (4984212137310).

Almost surely, 2^{25105661136046} is an apocalyptic number.

25105661136046 is a deficient number, since it is larger than the sum of its proper divisors (14768035962434).

25105661136046 is a wasteful number, since it uses less digits than its factorization.

25105661136046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738401798138.

The product of its (nonzero) digits is 777600, while the sum is 46.

Adding to 25105661136046 its reverse (64063116650152), we get a palindrome (89168777786198).

The spelling of 25105661136046 in words is "twenty-five trillion, one hundred five billion, six hundred sixty-one million, one hundred thirty-six thousand, forty-six".