25841945 has 4 divisors (see below), whose sum is σ = 31010340. Its totient is φ = 20673552.

The previous prime is 25841939. The next prime is 25841971. The reversal of 25841945 is 54914852.

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 6692569 + 19149376 = 2587^2 + 4376^2 .

It is a cyclic number.

It is not a de Polignac number, because 25841945 - 2⁸ = 25841689 is a prime.

It is a super-2 number, since 2×25841945² = 1335612242766050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25841899 and 25841908.

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, 2584190 + ... + 2584199.

It is an arithmetic number, because the mean of its divisors is an integer number (7752585).

Almost surely, 2^25841945 is an apocalyptic number.

It is an amenable number.

25841945 is a deficient number, since it is larger than the sum of its proper divisors (5168395).

25841945 is an equidigital number, since it uses as much as digits as its factorization.

25841945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168394.

The product of its digits is 57600, while the sum is 38.

The square root of 25841945 is about 5083.4973197593. The cubic root of 25841945 is about 295.6480820402.

The spelling of 25841945 in words is "twenty-five million, eight hundred forty-one thousand, nine hundred forty-five".