25461632 has 64 divisors (see below), whose sum is σ = 58662240. Its totient is φ = 10782720.

The previous prime is 25461629. The next prime is 25461643. The reversal of 25461632 is 23616452.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 25461595 and 25461604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140582 + ... + 140762.

Almost surely, 2^25461632 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 25461632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29331120).

25461632 is an abundant number, since it is smaller than the sum of its proper divisors (33200608).

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

25461632 is a wasteful number, since it uses less digits than its factorization.

25461632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 347 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 25461632 is about 5045.9520409929. The cubic root of 25461632 is about 294.1905685980.

The spelling of 25461632 in words is "twenty-five million, four hundred sixty-one thousand, six hundred thirty-two".