25669152 has 72 divisors (see below), whose sum is σ = 76854960. Its totient is φ = 8104320.

The previous prime is 25669141. The next prime is 25669169. The reversal of 25669152 is 25196652.

25669152 is a `hidden beast` number, since 2 + 566 + 91 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3127 + ... + 7817.

It is an arithmetic number, because the mean of its divisors is an integer number (1067430).

Almost surely, 2^25669152 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 25669152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38427480).

25669152 is an abundant number, since it is smaller than the sum of its proper divisors (51185808).

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

25669152 is a wasteful number, since it uses less digits than its factorization.

25669152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4726 (or 4715 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 25669152 is about 5066.4733296446. The cubic root of 25669152 is about 294.9876543718.

The spelling of 25669152 in words is "twenty-five million, six hundred sixty-nine thousand, one hundred fifty-two".