25434166 has 4 divisors (see below), whose sum is σ = 38151252. Its totient is φ = 12717082.

The previous prime is 25434161. The next prime is 25434173. The reversal of 25434166 is 66143452.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25434161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6358540 + ... + 6358543.

It is an arithmetic number, because the mean of its divisors is an integer number (9537813).

Almost surely, 2^25434166 is an apocalyptic number.

25434166 is a deficient number, since it is larger than the sum of its proper divisors (12717086).

25434166 is a wasteful number, since it uses less digits than its factorization.

25434166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12717085.

The product of its digits is 17280, while the sum is 31.

The square root of 25434166 is about 5043.2297191383. The cubic root of 25434166 is about 294.0847473459.

It can be divided in two parts, 25434 and 166, that added together give a square (25600 = 160²).

The spelling of 25434166 in words is "twenty-five million, four hundred thirty-four thousand, one hundred sixty-six".