25382894663 has 4 divisors (see below), whose sum is σ = 29009022480. Its totient is φ = 21756766848.

The previous prime is 25382894659. The next prime is 25382894681. The reversal of 25382894663 is 36649828352.

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 25382894663 - 2² = 25382894659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25382894599 and 25382894608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25382894653) 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, 1813063898 + ... + 1813063911.

It is an arithmetic number, because the mean of its divisors is an integer number (7252255620).

Almost surely, 2^25382894663 is an apocalyptic number.

25382894663 is a deficient number, since it is larger than the sum of its proper divisors (3626127817).

25382894663 is an equidigital number, since it uses as much as digits as its factorization.

25382894663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626127816.

The product of its digits is 14929920, while the sum is 56.

The spelling of 25382894663 in words is "twenty-five billion, three hundred eighty-two million, eight hundred ninety-four thousand, six hundred sixty-three".