25318765 has 4 divisors (see below), whose sum is σ = 30382524. Its totient is φ = 20255008.

The previous prime is 25318757. The next prime is 25318801. The reversal of 25318765 is 56781352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4652649 + 20666116 = 2157^2 + 4546^2 .

It is a cyclic number.

It is not a de Polignac number, because 25318765 - 2³ = 25318757 is a prime.

It is a super-2 number, since 2×25318765² = 1282079722250450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531872 + ... + 2531881.

It is an arithmetic number, because the mean of its divisors is an integer number (7595631).

Almost surely, 2^25318765 is an apocalyptic number.

It is an amenable number.

25318765 is a deficient number, since it is larger than the sum of its proper divisors (5063759).

25318765 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 25318765 = (52568731)₉.

25318765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5063758.

The product of its digits is 50400, while the sum is 37.

The square root of 25318765 is about 5031.7755315594. The cubic root of 25318765 is about 293.6392949371.

The spelling of 25318765 in words is "twenty-five million, three hundred eighteen thousand, seven hundred sixty-five".