25822764 has 72 divisors (see below), whose sum is σ = 72443280. Its totient is φ = 7689600.

The previous prime is 25822763. The next prime is 25822793. The reversal of 25822764 is 46722852.

25822764 is a `hidden beast` number, since 2 + 582 + 2 + 76 + 4 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (25822763) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23622 + ... + 24690.

Almost surely, 2^25822764 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 25822764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36221640).

25822764 is an abundant number, since it is smaller than the sum of its proper divisors (46620516).

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

25822764 is a wasteful number, since it uses less digits than its factorization.

25822764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151 (or 1146 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 25822764 is about 5081.6103746745. The cubic root of 25822764 is about 295.5749163725.

The spelling of 25822764 in words is "twenty-five million, eight hundred twenty-two thousand, seven hundred sixty-four".