25668238 has 8 divisors (see below), whose sum is σ = 38554488. Its totient is φ = 12816744.

The previous prime is 25668233. The next prime is 25668239. The reversal of 25668238 is 83286652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25668238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25668233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6756 + ... + 9847.

It is an arithmetic number, because the mean of its divisors is an integer number (4819311).

Almost surely, 2^25668238 is an apocalyptic number.

25668238 is a deficient number, since it is larger than the sum of its proper divisors (12886250).

25668238 is a wasteful number, since it uses less digits than its factorization.

25668238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17378.

The product of its digits is 138240, while the sum is 40.

The square root of 25668238 is about 5066.3831280313. The cubic root of 25668238 is about 294.9841531275.

The spelling of 25668238 in words is "twenty-five million, six hundred sixty-eight thousand, two hundred thirty-eight".