25696445 has 6 divisors (see below), whose sum is σ = 30849342. Its totient is φ = 20548088.

The previous prime is 25696441. The next prime is 25696471. The reversal of 25696445 is 54469652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20557156 + 5139289 = 4534^2 + 2267^2 .

It is not a de Polignac number, because 25696445 - 2² = 25696441 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25696441) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 10202 + ... + 12468.

It is an arithmetic number, because the mean of its divisors is an integer number (5141557).

Almost surely, 2^25696445 is an apocalyptic number.

It is an amenable number.

25696445 is a deficient number, since it is larger than the sum of its proper divisors (5152897).

25696445 is an frugal number, since it uses more digits than its factorization.

25696445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539 (or 2272 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 25696445 is about 5069.1661049920. The cubic root of 25696445 is about 295.0921669305.

The spelling of 25696445 in words is "twenty-five million, six hundred ninety-six thousand, four hundred forty-five".