25858992 has 80 divisors (see below), whose sum is σ = 71066880. Its totient is φ = 8084736.

The previous prime is 25858979. The next prime is 25858993. The reversal of 25858992 is 29985852.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (25858993) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 64938 + ... + 65334.

It is an arithmetic number, because the mean of its divisors is an integer number (888336).

Almost surely, 2^25858992 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 25858992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35533440).

25858992 is an abundant number, since it is smaller than the sum of its proper divisors (45207888).

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

25858992 is a wasteful number, since it uses less digits than its factorization.

25858992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 484 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The square root of 25858992 is about 5085.1737433445. The cubic root of 25858992 is about 295.7130772131.

The spelling of 25858992 in words is "twenty-five million, eight hundred fifty-eight thousand, nine hundred ninety-two".