25559072 has 144 divisors (see below), whose sum is σ = 67568256. Its totient is φ = 9292800.

The previous prime is 25559069. The next prime is 25559081. The reversal of 25559072 is 27095552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 623372 + ... + 623412.

It is an arithmetic number, because the mean of its divisors is an integer number (469224).

Almost surely, 2^25559072 is an apocalyptic number.

25559072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25559072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33784128).

25559072 is an abundant number, since it is smaller than the sum of its proper divisors (42009184).

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

25559072 is a wasteful number, since it uses less digits than its factorization.

25559072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 25559072 is about 5055.5980852912. The cubic root of 25559072 is about 294.5653735727.

The spelling of 25559072 in words is "twenty-five million, five hundred fifty-nine thousand, seventy-two".