25861345 has 8 divisors (see below), whose sum is σ = 31459176. Its totient is φ = 20405376.

The previous prime is 25861333. The next prime is 25861349. The reversal of 25861345 is 54316852.

It can be written as a sum of positive squares in 4 ways, for example, as 7551504 + 18309841 = 2748^2 + 4279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25861345 - 2¹⁵ = 25828577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25861345.

It is not an unprimeable number, because it can be changed into a prime (25861349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35062 + ... + 35791.

It is an arithmetic number, because the mean of its divisors is an integer number (3932397).

Almost surely, 2^25861345 is an apocalyptic number.

It is an amenable number.

25861345 is a deficient number, since it is larger than the sum of its proper divisors (5597831).

25861345 is an equidigital number, since it uses as much as digits as its factorization.

25861345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70931.

The product of its digits is 28800, while the sum is 34.

The square root of 25861345 is about 5085.4050969416. The cubic root of 25861345 is about 295.7220462629.

The spelling of 25861345 in words is "twenty-five million, eight hundred sixty-one thousand, three hundred forty-five".