25525566616361 has 8 divisors (see below), whose sum is σ = 29883590185344. Its totient is φ = 21345421560480.

The previous prime is 25525566616339. The next prime is 25525566616463. The reversal of 25525566616361 is 16361666552552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25525566616361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25525566616361.

It is not an unprimeable number, because it can be changed into a prime (25525566616061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44469627965 + ... + 44469628538.

It is an arithmetic number, because the mean of its divisors is an integer number (3735448773168).

Almost surely, 2^{25525566616361} is an apocalyptic number.

It is an amenable number.

25525566616361 is a deficient number, since it is larger than the sum of its proper divisors (4358023568983).

25525566616361 is an equidigital number, since it uses as much as digits as its factorization.

25525566616361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88939256551.

The product of its digits is 58320000, while the sum is 59.

The spelling of 25525566616361 in words is "twenty-five trillion, five hundred twenty-five billion, five hundred sixty-six million, six hundred sixteen thousand, three hundred sixty-one".