25672765 has 16 divisors (see below), whose sum is σ = 32091696. Its totient is φ = 19699200.

The previous prime is 25672733. The next prime is 25672769. The reversal of 25672765 is 56727652.

It can be written as a sum of positive squares in 8 ways, for example, as 9326916 + 16345849 = 3054^2 + 4043^2 .

It is not a de Polignac number, because 25672765 - 2⁵ = 25672733 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 (25672769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11479 + ... + 13531.

It is an arithmetic number, because the mean of its divisors is an integer number (2005731).

Almost surely, 2^25672765 is an apocalyptic number.

It is an amenable number.

25672765 is a deficient number, since it is larger than the sum of its proper divisors (6418931).

25672765 is a wasteful number, since it uses less digits than its factorization.

25672765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160.

The product of its digits is 176400, while the sum is 40.

The square root of 25672765 is about 5066.8298767573. The cubic root of 25672765 is about 295.0014938160.

The spelling of 25672765 in words is "twenty-five million, six hundred seventy-two thousand, seven hundred sixty-five".