25218052 has 12 divisors (see below), whose sum is σ = 45653580. Its totient is φ = 12174176.

The previous prime is 25218041. The next prime is 25218077. The reversal of 25218052 is 25081252.

It can be written as a sum of positive squares in 2 ways, for example, as 8375236 + 16842816 = 2894^2 + 4104^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 108583 + ... + 108814.

It is an arithmetic number, because the mean of its divisors is an integer number (3804465).

Almost surely, 2^25218052 is an apocalyptic number.

It is an amenable number.

25218052 is a deficient number, since it is larger than the sum of its proper divisors (20435528).

25218052 is a wasteful number, since it uses less digits than its factorization.

25218052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217430 (or 217428 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 25218052 is about 5021.7578595548. The cubic root of 25218052 is about 293.2494313528.

The spelling of 25218052 in words is "twenty-five million, two hundred eighteen thousand, fifty-two".