25641532 has 12 divisors (see below), whose sum is σ = 51283120. Its totient is φ = 10989216.

The previous prime is 25641529. The next prime is 25641563. The reversal of 25641532 is 23514652.

25641532 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 915769 = 25641532 / (2 + 5 + 6 + 4 + 1 + 5 + 3 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 25641532.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 457857 + ... + 457912.

Almost surely, 2^25641532 is an apocalyptic number.

It is an amenable number.

25641532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25641532 is a wasteful number, since it uses less digits than its factorization.

25641532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915780 (or 915778 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 25641532 is about 5063.7468341140. The cubic root of 25641532 is about 294.8818141916.

It can be divided in two parts, 2564 and 1532, that added together give a 12-th power (4096 = 2¹²).

The spelling of 25641532 in words is "twenty-five million, six hundred forty-one thousand, five hundred thirty-two".