25585445 has 4 divisors (see below), whose sum is σ = 30702540. Its totient is φ = 20468352.

The previous prime is 25585423. The next prime is 25585451. The reversal of 25585445 is 54458552.

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 16337764 + 9247681 = 4042^2 + 3041^2 .

It is a cyclic number.

It is not a de Polignac number, because 25585445 - 2¹⁰ = 25584421 is a prime.

It is a super-2 number, since 2×25585445² = 1309229991696050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25585399 and 25585408.

It is a congruent 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, 2558540 + ... + 2558549.

It is an arithmetic number, because the mean of its divisors is an integer number (7675635).

Almost surely, 2^25585445 is an apocalyptic number.

It is an amenable number.

25585445 is a deficient number, since it is larger than the sum of its proper divisors (5117095).

25585445 is an equidigital number, since it uses as much as digits as its factorization.

25585445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5117094.

The product of its digits is 160000, while the sum is 38.

The square root of 25585445 is about 5058.2057095377. The cubic root of 25585445 is about 294.6666540122. Note that the first 4 decimals are identical.

The spelling of 25585445 in words is "twenty-five million, five hundred eighty-five thousand, four hundred forty-five".