25334561663 has 8 divisors (see below), whose sum is σ = 26869443936. Its totient is φ = 23835794400.

The previous prime is 25334561657. The next prime is 25334561683. The reversal of 25334561663 is 36616543352.

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

It is a cyclic number.

It is not a de Polignac number, because 25334561663 - 2¹⁴ = 25334545279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25334561653) 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 7 ways as a sum of consecutive naturals, for example, 9027308 + ... + 9030113.

It is an arithmetic number, because the mean of its divisors is an integer number (3358680492).

Almost surely, 2^25334561663 is an apocalyptic number.

25334561663 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25334561663 is a deficient number, since it is larger than the sum of its proper divisors (1534882273).

25334561663 is a wasteful number, since it uses less digits than its factorization.

25334561663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18057505.

The product of its digits is 1166400, while the sum is 44.

The spelling of 25334561663 in words is "twenty-five billion, three hundred thirty-four million, five hundred sixty-one thousand, six hundred sixty-three".