25164664 has 64 divisors (see below), whose sum is σ = 57772800. Its totient is φ = 10036224.

The previous prime is 25164649. The next prime is 25164673. The reversal of 25164664 is 46646152.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71112 + ... + 71464.

It is an arithmetic number, because the mean of its divisors is an integer number (902700).

Almost surely, 2^25164664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25164664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28886400).

25164664 is an abundant number, since it is smaller than the sum of its proper divisors (32608136).

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

25164664 is a wasteful number, since it uses less digits than its factorization.

25164664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 448 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 25164664 is about 5016.4393746960. The cubic root of 25164664 is about 293.0423434321.

The spelling of 25164664 in words is "twenty-five million, one hundred sixty-four thousand, six hundred sixty-four".