25884090 has 64 divisors (see below), whose sum is σ = 70917120. Its totient is φ = 6713280.

The previous prime is 25884073. The next prime is 25884097. The reversal of 25884090 is 9048852.

It is a super-2 number, since 2×25884090² = 1339972230256200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25884097) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8695 + ... + 11285.

It is an arithmetic number, because the mean of its divisors is an integer number (1108080).

Almost surely, 2^25884090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25884090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35458560).

25884090 is an abundant number, since it is smaller than the sum of its proper divisors (45033030).

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

25884090 is a wasteful number, since it uses less digits than its factorization.

25884090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644 (or 2638 counting only the distinct ones).

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

The square root of 25884090 is about 5087.6409071396. The cubic root of 25884090 is about 295.8087165040.

It can be divided in two parts, 258 and 84090, that added together give a palindrome (84348).

The spelling of 25884090 in words is "twenty-five million, eight hundred eighty-four thousand, ninety".