25568628 has 24 divisors (see below), whose sum is σ = 61273632. Its totient is φ = 8292384.

The previous prime is 25568567. The next prime is 25568639. The reversal of 25568628 is 82686552.

It is a self number, because there is not a number n which added to its sum of digits gives 25568628.

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 7 ways as a sum of consecutive naturals, for example, 28350 + ... + 29237.

It is an arithmetic number, because the mean of its divisors is an integer number (2553068).

Almost surely, 2^25568628 is an apocalyptic number.

It is an amenable number.

25568628 is an abundant number, since it is smaller than the sum of its proper divisors (35705004).

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

25568628 is a wasteful number, since it uses less digits than its factorization.

25568628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57631 (or 57629 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 25568628 is about 5056.5430879208. The cubic root of 25568628 is about 294.6020795999.

The spelling of 25568628 in words is "twenty-five million, five hundred sixty-eight thousand, six hundred twenty-eight".