25863764 has 6 divisors (see below), whose sum is σ = 45261594. Its totient is φ = 12931880.

The previous prime is 25863751. The next prime is 25863781. The reversal of 25863764 is 46736852.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23931664 + 1932100 = 4892^2 + 1390^2 .

It is a congruent number.

It is an unprimeable number.

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, 3232967 + ... + 3232974.

It is an arithmetic number, because the mean of its divisors is an integer number (7543599).

Almost surely, 2^25863764 is an apocalyptic number.

It is an amenable number.

25863764 is a deficient number, since it is larger than the sum of its proper divisors (19397830).

25863764 is a wasteful number, since it uses less digits than its factorization.

25863764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6465945 (or 6465943 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 25863764 is about 5085.6429288734. The cubic root of 25863764 is about 295.7312663213.

The spelling of 25863764 in words is "twenty-five million, eight hundred sixty-three thousand, seven hundred sixty-four".