25652765 has 4 divisors (see below), whose sum is σ = 30783324. Its totient is φ = 20522208.

The previous prime is 25652761. The next prime is 25652773. The reversal of 25652765 is 56725652.

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 18156121 + 7496644 = 4261^2 + 2738^2 .

It is a cyclic number.

It is not a de Polignac number, because 25652765 - 2² = 25652761 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25652761) 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, 2565272 + ... + 2565281.

It is an arithmetic number, because the mean of its divisors is an integer number (7695831).

Almost surely, 2^25652765 is an apocalyptic number.

It is an amenable number.

25652765 is a deficient number, since it is larger than the sum of its proper divisors (5130559).

25652765 is an equidigital number, since it uses as much as digits as its factorization.

25652765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5130558.

The product of its digits is 126000, while the sum is 38.

The square root of 25652765 is about 5064.8558715920. The cubic root of 25652765 is about 294.9248683513.

The spelling of 25652765 in words is "twenty-five million, six hundred fifty-two thousand, seven hundred sixty-five".