25705288 has 16 divisors (see below), whose sum is σ = 55082880. Its totient is φ = 11016528.

The previous prime is 25705279. The next prime is 25705289. The reversal of 25705288 is 88250752.

It is not an unprimeable number, because it can be changed into a prime (25705289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229456 + ... + 229567.

It is an arithmetic number, because the mean of its divisors is an integer number (3442680).

Almost surely, 2^25705288 is an apocalyptic number.

25705288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25705288 is an abundant number, since it is smaller than the sum of its proper divisors (29377592).

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

25705288 is a wasteful number, since it uses less digits than its factorization.

25705288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459036 (or 459032 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 25705288 is about 5070.0382641554. The cubic root of 25705288 is about 295.1260133860.

The spelling of 25705288 in words is "twenty-five million, seven hundred five thousand, two hundred eighty-eight".