25805532 has 36 divisors (see below), whose sum is σ = 61106136. Its totient is φ = 8475840.

The previous prime is 25805531. The next prime is 25805537. The reversal of 25805532 is 23550852.

It is a self number, because there is not a number n which added to its sum of digits gives 25805532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25805531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142482 + ... + 142662.

Almost surely, 2^25805532 is an apocalyptic number.

It is an amenable number.

25805532 is an abundant number, since it is smaller than the sum of its proper divisors (35300604).

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

25805532 is a wasteful number, since it uses less digits than its factorization.

25805532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 25805532 is about 5079.9145662107. The cubic root of 25805532 is about 295.5091542367.

The spelling of 25805532 in words is "twenty-five million, eight hundred five thousand, five hundred thirty-two".