25355532 has 12 divisors (see below), whose sum is σ = 59162936. Its totient is φ = 8451840.

The previous prime is 25355531. The next prime is 25355537. The reversal of 25355532 is 23555352.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 25355532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25355531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056469 + ... + 1056492.

Almost surely, 2^25355532 is an apocalyptic number.

It is an amenable number.

25355532 is an abundant number, since it is smaller than the sum of its proper divisors (33807404).

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

25355532 is a wasteful number, since it uses less digits than its factorization.

25355532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112968 (or 2112966 counting only the distinct ones).

The product of its digits is 22500, while the sum is 30.

The square root of 25355532 is about 5035.4276878931. The cubic root of 25355532 is about 293.7813636649.

The spelling of 25355532 in words is "twenty-five million, three hundred fifty-five thousand, five hundred thirty-two".