25614161663 has 4 divisors (see below), whose sum is σ = 25616635200. Its totient is φ = 25611688128.

The previous prime is 25614161659. The next prime is 25614161767. The reversal of 25614161663 is 36616141652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25614161663 - 2² = 25614161659 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 25614161663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25614161633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1221170 + ... + 1241967.

It is an arithmetic number, because the mean of its divisors is an integer number (6404158800).

Almost surely, 2^25614161663 is an apocalyptic number.

25614161663 is a deficient number, since it is larger than the sum of its proper divisors (2473537).

25614161663 is a wasteful number, since it uses less digits than its factorization.

25614161663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473536.

The product of its digits is 155520, while the sum is 41.

The spelling of 25614161663 in words is "twenty-five billion, six hundred fourteen million, one hundred sixty-one thousand, six hundred sixty-three".