25868736 has 84 divisors (see below), whose sum is σ = 75074272. Its totient is φ = 8515584.

The previous prime is 25868723. The next prime is 25868743. The reversal of 25868736 is 63786852.

It is a junction number, because it is equal to n+sod(n) for n = 25868691 and 25868700.

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 11 ways as a sum of consecutive naturals, for example, 55641 + ... + 56103.

Almost surely, 2^25868736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25868736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37537136).

25868736 is an abundant number, since it is smaller than the sum of its proper divisors (49205536).

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

25868736 is a wasteful number, since it uses less digits than its factorization.

25868736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 565 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 25868736 is about 5086.1317324662. The cubic root of 25868736 is about 295.7502153761.

The spelling of 25868736 in words is "twenty-five million, eight hundred sixty-eight thousand, seven hundred thirty-six".