25861608 has 48 divisors (see below), whose sum is σ = 71042400. Its totient is φ = 8497440.

The previous prime is 25861553. The next prime is 25861643. The reversal of 25861608 is 80616852.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2583 + ... + 7641.

It is an arithmetic number, because the mean of its divisors is an integer number (1480050).

Almost surely, 2^25861608 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 25861608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35521200).

25861608 is an abundant number, since it is smaller than the sum of its proper divisors (45180792).

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

25861608 is a wasteful number, since it uses less digits than its factorization.

25861608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142 (or 5135 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 25861608 is about 5085.4309551895. The cubic root of 25861608 is about 295.7230487196.

The spelling of 25861608 in words is "twenty-five million, eight hundred sixty-one thousand, six hundred eight".