25770065 has 4 divisors (see below), whose sum is σ = 30924084. Its totient is φ = 20616048.

The previous prime is 25770013. The next prime is 25770071. The reversal of 25770065 is 56007752.

It is a happy number.

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 17032129 + 8737936 = 4127^2 + 2956^2 .

It is a cyclic number.

It is not a de Polignac number, because 25770065 - 2¹⁰ = 25769041 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, 2577002 + ... + 2577011.

It is an arithmetic number, because the mean of its divisors is an integer number (7731021).

Almost surely, 2^25770065 is an apocalyptic number.

It is an amenable number.

25770065 is a deficient number, since it is larger than the sum of its proper divisors (5154019).

25770065 is an equidigital number, since it uses as much as digits as its factorization.

25770065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5154018.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 25770065 is about 5076.4224607493. The cubic root of 25770065 is about 295.3737100428.

The spelling of 25770065 in words is "twenty-five million, seven hundred seventy thousand, sixty-five".