25004166 has 64 divisors (see below), whose sum is σ = 57341952. Its totient is φ = 7260000.

The previous prime is 25004159. The next prime is 25004173. The reversal of 25004166 is 66140052.

It is an interprime number because it is at equal distance from previous prime (25004159) and next prime (25004173).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247516 + ... + 247616.

It is an arithmetic number, because the mean of its divisors is an integer number (895968).

Almost surely, 2^25004166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25004166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28670976).

25004166 is an abundant number, since it is smaller than the sum of its proper divisors (32337786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25004166 is a wasteful number, since it uses less digits than its factorization.

25004166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25004166 is about 5000.4165826459. The cubic root of 25004166 is about 292.4180148630.

It can be divided in two parts, 2500 and 4166, that added together give a palindrome (6666).

The spelling of 25004166 in words is "twenty-five million, four thousand, one hundred sixty-six".