25623353163 has 4 divisors (see below), whose sum is σ = 34164470888. Its totient is φ = 17082235440.

The previous prime is 25623353143. The next prime is 25623353179. The reversal of 25623353163 is 36135332652.

It is a happy number.

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

It is not a de Polignac number, because 25623353163 - 2²⁹ = 25086482251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25623353143) 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, 4270558858 + ... + 4270558863.

It is an arithmetic number, because the mean of its divisors is an integer number (8541117722).

Almost surely, 2^25623353163 is an apocalyptic number.

25623353163 is a deficient number, since it is larger than the sum of its proper divisors (8541117725).

25623353163 is an equidigital number, since it uses as much as digits as its factorization.

25623353163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8541117724.

The product of its digits is 291600, while the sum is 39.

The spelling of 25623353163 in words is "twenty-five billion, six hundred twenty-three million, three hundred fifty-three thousand, one hundred sixty-three".