25512423163 has 4 divisors (see below), whose sum is σ = 25513009288. Its totient is φ = 25511837040.

The previous prime is 25512423137. The next prime is 25512423229. The reversal of 25512423163 is 36132421552.

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 25512423163 - 2²¹ = 25510326011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25512423263) 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, 222033 + ... + 316738.

It is an arithmetic number, because the mean of its divisors is an integer number (6378252322).

Almost surely, 2^25512423163 is an apocalyptic number.

25512423163 is a deficient number, since it is larger than the sum of its proper divisors (586125).

25512423163 is an equidigital number, since it uses as much as digits as its factorization.

25512423163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586124.

The product of its digits is 43200, while the sum is 34.

The spelling of 25512423163 in words is "twenty-five billion, five hundred twelve million, four hundred twenty-three thousand, one hundred sixty-three".