25764863 has 4 divisors (see below), whose sum is σ = 25798968. Its totient is φ = 25730760.

The previous prime is 25764841. The next prime is 25764881. The reversal of 25764863 is 36846752.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25764863 - 2¹⁰ = 25763839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25764863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25764803) 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, 15893 + ... + 17438.

It is an arithmetic number, because the mean of its divisors is an integer number (6449742).

Almost surely, 2^25764863 is an apocalyptic number.

25764863 is a deficient number, since it is larger than the sum of its proper divisors (34105).

25764863 is an equidigital number, since it uses as much as digits as its factorization.

25764863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34104.

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

The square root of 25764863 is about 5075.9100661852. The cubic root of 25764863 is about 295.3538337840.

The spelling of 25764863 in words is "twenty-five million, seven hundred sixty-four thousand, eight hundred sixty-three".