25605712 has 20 divisors (see below), whose sum is σ = 54121536. Its totient is φ = 11638880.

The previous prime is 25605709. The next prime is 25605719. The reversal of 25605712 is 21750652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25605719) by changing a digit.

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, 72568 + ... + 72919.

Almost surely, 2^25605712 is an apocalyptic number.

25605712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25605712 is an abundant number, since it is smaller than the sum of its proper divisors (28515824).

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

25605712 is a wasteful number, since it uses less digits than its factorization.

25605712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145506 (or 145500 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 25605712 is about 5060.2086913486. The cubic root of 25605712 is about 294.7444382486.

The spelling of 25605712 in words is "twenty-five million, six hundred five thousand, seven hundred twelve".