25845166 has 16 divisors (see below), whose sum is σ = 40328640. Its totient is φ = 12411360.

The previous prime is 25845163. The next prime is 25845167. The reversal of 25845166 is 66154852.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25845161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3636 + ... + 8056.

It is an arithmetic number, because the mean of its divisors is an integer number (2520540).

Almost surely, 2^25845166 is an apocalyptic number.

25845166 is a deficient number, since it is larger than the sum of its proper divisors (14483474).

25845166 is a wasteful number, since it uses less digits than its factorization.

25845166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539.

The product of its digits is 57600, while the sum is 37.

The square root of 25845166 is about 5083.8141193399. The cubic root of 25845166 is about 295.6603649510.

It can be divided in two parts, 2584 and 5166, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 25845166 in words is "twenty-five million, eight hundred forty-five thousand, one hundred sixty-six".