25166945 has 8 divisors (see below), whose sum is σ = 31513536. Its totient is φ = 19258096.

The previous prime is 25166929. The next prime is 25166971. The reversal of 25166945 is 54966152.

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

It is a cyclic number.

It is not a de Polignac number, because 25166945 - 2⁴ = 25166929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25166899 and 25166908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109307 + ... + 109536.

It is an arithmetic number, because the mean of its divisors is an integer number (3939192).

Almost surely, 2^25166945 is an apocalyptic number.

It is an amenable number.

25166945 is a deficient number, since it is larger than the sum of its proper divisors (6346591).

25166945 is a wasteful number, since it uses less digits than its factorization.

25166945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218871.

The product of its digits is 64800, while the sum is 38.

The square root of 25166945 is about 5016.6667220377. Note that the first 3 decimals coincide. The cubic root of 25166945 is about 293.0511972412.

The spelling of 25166945 in words is "twenty-five million, one hundred sixty-six thousand, nine hundred forty-five".