25785612 has 36 divisors (see below), whose sum is σ = 65661960. Its totient is φ = 8531712.

The previous prime is 25785601. The next prime is 25785619. The reversal of 25785612 is 21658752.

It is a happy number.

25785612 is a `hidden beast` number, since 25 + 78 + 561 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25785619) 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 11 ways as a sum of consecutive naturals, for example, 2428 + ... + 7580.

Almost surely, 2^25785612 is an apocalyptic number.

It is an amenable number.

25785612 is an abundant number, since it is smaller than the sum of its proper divisors (39876348).

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

25785612 is a wasteful number, since it uses less digits than its factorization.

25785612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302 (or 5297 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 25785612 is about 5077.9535247972. The cubic root of 25785612 is about 295.4330974483.

The spelling of 25785612 in words is "twenty-five million, seven hundred eighty-five thousand, six hundred twelve".