25812288 has 84 divisors (see below), whose sum is σ = 75860148. Its totient is φ = 8386560.

The previous prime is 25812287. The next prime is 25812299. The reversal of 25812288 is 88221852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14197824 + 11614464 = 3768^2 + 3408^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25812287) 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 11 ways as a sum of consecutive naturals, for example, 23070 + ... + 24162.

It is an arithmetic number, because the mean of its divisors is an integer number (903097).

Almost surely, 2^25812288 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 25812288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37930074).

25812288 is an abundant number, since it is smaller than the sum of its proper divisors (50047860).

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

25812288 is a wasteful number, since it uses less digits than its factorization.

25812288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152 (or 1139 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 25812288 is about 5080.5794945065. The cubic root of 25812288 is about 295.5349405118.

The spelling of 25812288 in words is "twenty-five million, eight hundred twelve thousand, two hundred eighty-eight".