25628742 has 12 divisors (see below), whose sum is σ = 55528980. Its totient is φ = 8542908.

The previous prime is 25628737. The next prime is 25628761. The reversal of 25628742 is 24782652.

25628742 is a `hidden beast` number, since 25 + 628 + 7 + 4 + 2 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25628697 and 25628706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711892 + ... + 711927.

It is an arithmetic number, because the mean of its divisors is an integer number (4627415).

Almost surely, 2^25628742 is an apocalyptic number.

25628742 is an abundant number, since it is smaller than the sum of its proper divisors (29900238).

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

25628742 is a wasteful number, since it uses less digits than its factorization.

25628742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423827 (or 1423824 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 25628742 is about 5062.4837777518. The cubic root of 25628742 is about 294.8327770064.

The spelling of 25628742 in words is "twenty-five million, six hundred twenty-eight thousand, seven hundred forty-two".