25802838 has 96 divisors (see below), whose sum is σ = 63382176. Its totient is φ = 7547904.

The previous prime is 25802831. The next prime is 25802851. The reversal of 25802838 is 83820852.

25802838 is a modest number, since divided by 2838 gives 2580 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25802831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 486820 + ... + 486872.

It is an arithmetic number, because the mean of its divisors is an integer number (660231).

Almost surely, 2^25802838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25802838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31691088).

25802838 is an abundant number, since it is smaller than the sum of its proper divisors (37579338).

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

25802838 is a wasteful number, since it uses less digits than its factorization.

25802838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 25802838 is about 5079.6493973502. The cubic root of 25802838 is about 295.4988705326.

The spelling of 25802838 in words is "twenty-five million, eight hundred two thousand, eight hundred thirty-eight".