25685850 has 48 divisors (see below), whose sum is σ = 64326240. Its totient is φ = 6782400.

The previous prime is 25685839. The next prime is 25685873. The reversal of 25685850 is 5858652.

It is a Smith number, since the sum of its digits (39) 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 = 25685799 and 25685808.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15565 + ... + 17135.

It is an arithmetic number, because the mean of its divisors is an integer number (1340130).

Almost surely, 2^25685850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25685850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32163120).

25685850 is an abundant number, since it is smaller than the sum of its proper divisors (38640390).

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

25685850 is a wasteful number, since it uses less digits than its factorization.

25685850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 25685850 is about 5068.1209535685. The cubic root of 25685850 is about 295.0516044933.

The spelling of 25685850 in words is "twenty-five million, six hundred eighty-five thousand, eight hundred fifty".