25712628 has 12 divisors (see below), whose sum is σ = 59996160. Its totient is φ = 8570872.

The previous prime is 25712623. The next prime is 25712639. The reversal of 25712628 is 82621752.

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

It is a super-2 number, since 2×25712628² = 1322278477332768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25712623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071348 + ... + 1071371.

It is an arithmetic number, because the mean of its divisors is an integer number (4999680).

Almost surely, 2^25712628 is an apocalyptic number.

It is an amenable number.

25712628 is an abundant number, since it is smaller than the sum of its proper divisors (34283532).

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

25712628 is a wasteful number, since it uses less digits than its factorization.

25712628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142726 (or 2142724 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 25712628 is about 5070.7620729038. The cubic root of 25712628 is about 295.1541012356.

The spelling of 25712628 in words is "twenty-five million, seven hundred twelve thousand, six hundred twenty-eight".