25285445 has 8 divisors (see below), whose sum is σ = 30611736. Its totient is φ = 20048896.

The previous prime is 25285439. The next prime is 25285457. The reversal of 25285445 is 54458252.

It can be written as a sum of positive squares in 4 ways, for example, as 195364 + 25090081 = 442^2 + 5009^2 .

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 25285445 - 2⁸ = 25285189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21812 + ... + 22941.

It is an arithmetic number, because the mean of its divisors is an integer number (3826467).

Almost surely, 2^25285445 is an apocalyptic number.

It is an amenable number.

25285445 is a deficient number, since it is larger than the sum of its proper divisors (5326291).

25285445 is a wasteful number, since it uses less digits than its factorization.

25285445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44871.

The product of its digits is 64000, while the sum is 35.

The square root of 25285445 is about 5028.4634830135. The cubic root of 25285445 is about 293.5104266655.

The spelling of 25285445 in words is "twenty-five million, two hundred eighty-five thousand, four hundred forty-five".