26250013 has 8 divisors (see below), whose sum is σ = 26622648. Its totient is φ = 25880064.

The previous prime is 26249987. The next prime is 26250031. The reversal of 26250013 is 31005262.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 311364 + 25938649 = 558^2 + 5093^2 .

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 26250013 - 2⁵ = 26249981 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 (26253013) 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 7 ways as a sum of consecutive naturals, for example, 25831 + ... + 26827.

It is an arithmetic number, because the mean of its divisors is an integer number (3327831).

Almost surely, 2^26250013 is an apocalyptic number.

It is an amenable number.

26250013 is a deficient number, since it is larger than the sum of its proper divisors (372635).

26250013 is a wasteful number, since it uses less digits than its factorization.

26250013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 26250013 is about 5123.4766516497. The cubic root of 26250013 is about 297.1961466991.

Adding to 26250013 its reverse (31005262), we get a palindrome (57255275).

The spelling of 26250013 in words is "twenty-six million, two hundred fifty thousand, thirteen".