25580022 has 64 divisors (see below), whose sum is σ = 58060800. Its totient is φ = 7459200.

The previous prime is 25580021. The next prime is 25580033. The reversal of 25580022 is 22008552.

It is a junction number, because it is equal to n+sod(n) for n = 25579974 and 25580001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25580021) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 171604 + ... + 171752.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^25580022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25580022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29030400).

25580022 is an abundant number, since it is smaller than the sum of its proper divisors (32480778).

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

25580022 is a wasteful number, since it uses less digits than its factorization.

25580022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 25580022 is about 5057.6696214759. The cubic root of 25580022 is about 294.6458337089.

Adding to 25580022 its reverse (22008552), we get a palindrome (47588574).

The spelling of 25580022 in words is "twenty-five million, five hundred eighty thousand, twenty-two".