25166163 has 32 divisors (see below), whose sum is σ = 38817792. Its totient is φ = 14352800.

The previous prime is 25166143. The next prime is 25166177. The reversal of 25166163 is 36166152.

It is not a de Polignac number, because 25166163 - 2⁵ = 25166131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25166163.

It is not an unprimeable number, because it can be changed into a prime (25166143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53656 + ... + 54122.

It is an arithmetic number, because the mean of its divisors is an integer number (1213056).

Almost surely, 2^25166163 is an apocalyptic number.

25166163 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25166163 is a deficient number, since it is larger than the sum of its proper divisors (13651629).

25166163 is a wasteful number, since it uses less digits than its factorization.

25166163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575.

The product of its digits is 6480, while the sum is 30.

The square root of 25166163 is about 5016.5887812337. The cubic root of 25166163 is about 293.0481619315.

The spelling of 25166163 in words is "twenty-five million, one hundred sixty-six thousand, one hundred sixty-three".