25321075163 has 4 divisors (see below), whose sum is σ = 25324619280. Its totient is φ = 25317531048.

The previous prime is 25321075147. The next prime is 25321075177. The reversal of 25321075163 is 36157012352.

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 25321075163 - 2⁴ = 25321075147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25321075103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1761320 + ... + 1775637.

It is an arithmetic number, because the mean of its divisors is an integer number (6331154820).

Almost surely, 2^25321075163 is an apocalyptic number.

25321075163 is a deficient number, since it is larger than the sum of its proper divisors (3544117).

25321075163 is an equidigital number, since it uses as much as digits as its factorization.

25321075163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544116.

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 25321075163 in words is "twenty-five billion, three hundred twenty-one million, seventy-five thousand, one hundred sixty-three".