25671632 has 80 divisors (see below), whose sum is σ = 61246080. Its totient is φ = 10174464.

The previous prime is 25671631. The next prime is 25671637. The reversal of 25671632 is 23617652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25671631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184619 + ... + 184757.

It is an arithmetic number, because the mean of its divisors is an integer number (765576).

Almost surely, 2^25671632 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 25671632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30623040).

25671632 is an abundant number, since it is smaller than the sum of its proper divisors (35574448).

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

25671632 is a wasteful number, since it uses less digits than its factorization.

25671632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 262 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 25671632 is about 5066.7180699147. The cubic root of 25671632 is about 294.9971540470.

The spelling of 25671632 in words is "twenty-five million, six hundred seventy-one thousand, six hundred thirty-two".