25461166 has 4 divisors (see below), whose sum is σ = 38191752. Its totient is φ = 12730582.

The previous prime is 25461157. The next prime is 25461173. The reversal of 25461166 is 66116452.

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365290 + ... + 6365293.

It is an arithmetic number, because the mean of its divisors is an integer number (9547938).

Almost surely, 2^25461166 is an apocalyptic number.

25461166 is a deficient number, since it is larger than the sum of its proper divisors (12730586).

25461166 is a wasteful number, since it uses less digits than its factorization.

25461166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12730585.

The product of its digits is 8640, while the sum is 31.

The square root of 25461166 is about 5045.9058651544. The cubic root of 25461166 is about 294.1887738238.

The spelling of 25461166 in words is "twenty-five million, four hundred sixty-one thousand, one hundred sixty-six".