25798445 has 8 divisors (see below), whose sum is σ = 31074840. Its totient is φ = 20560960.

The previous prime is 25798427. The next prime is 25798511. The reversal of 25798445 is 54489752.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 978121 + 24820324 = 989^2 + 4982^2 .

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

It is not a de Polignac number, because 25798445 - 2⁸ = 25798189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25798396 and 25798405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8246 + ... + 10935.

It is an arithmetic number, because the mean of its divisors is an integer number (3884355).

Almost surely, 2^25798445 is an apocalyptic number.

It is an amenable number.

25798445 is a deficient number, since it is larger than the sum of its proper divisors (5276395).

25798445 is a wasteful number, since it uses less digits than its factorization.

25798445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19455.

The product of its digits is 403200, while the sum is 44.

The square root of 25798445 is about 5079.2169672106. The cubic root of 25798445 is about 295.4820997648.

The spelling of 25798445 in words is "twenty-five million, seven hundred ninety-eight thousand, four hundred forty-five".