25861288 has 8 divisors (see below), whose sum is σ = 48489930. Its totient is φ = 12930640.

The previous prime is 25861279. The next prime is 25861289. The reversal of 25861288 is 88216852.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15350724 + 10510564 = 3918^2 + 3242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 25861288.

It is not an unprimeable number, because it can be changed into a prime (25861289) 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 as a sum of consecutive naturals, namely, 1616323 + ... + 1616338.

Almost surely, 2^25861288 is an apocalyptic number.

It is an amenable number.

25861288 is a deficient number, since it is larger than the sum of its proper divisors (22628642).

25861288 is a wasteful number, since it uses less digits than its factorization.

25861288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232667 (or 3232663 counting only the distinct ones).

The product of its digits is 61440, while the sum is 40.

The square root of 25861288 is about 5085.3994926653. The cubic root of 25861288 is about 295.7218289996.

The spelling of 25861288 in words is "twenty-five million, eight hundred sixty-one thousand, two hundred eighty-eight".