25802065 has 4 divisors (see below), whose sum is σ = 30962484. Its totient is φ = 20641648.

The previous prime is 25802059. The next prime is 25802071. The reversal of 25802065 is 56020852.

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

It is an interprime number because it is at equal distance from previous prime (25802059) and next prime (25802071).

It can be written as a sum of positive squares in 2 ways, for example, as 5803281 + 19998784 = 2409^2 + 4472^2 .

It is a cyclic number.

It is not a de Polignac number, because 25802065 - 2⁵ = 25802033 is a prime.

It is a Duffinian 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, 2580202 + ... + 2580211.

It is an arithmetic number, because the mean of its divisors is an integer number (7740621).

Almost surely, 2^25802065 is an apocalyptic number.

It is an amenable number.

25802065 is a deficient number, since it is larger than the sum of its proper divisors (5160419).

25802065 is an equidigital number, since it uses as much as digits as its factorization.

25802065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160418.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 25802065 is about 5079.5733088518. The cubic root of 25802065 is about 295.4959196568.

The spelling of 25802065 in words is "twenty-five million, eight hundred two thousand, sixty-five".