26250401 has 2 divisors, whose sum is σ = 26250402. Its totient is φ = 26250400.

The previous prime is 26250391. The next prime is 26250403. The reversal of 26250401 is 10405262.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16321600 + 9928801 = 4040^2 + 3151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26250401 is a prime.

It is a Sophie Germain prime.

Together with 26250403, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26250403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13125200 + 13125201.

It is an arithmetic number, because the mean of its divisors is an integer number (13125201).

Almost surely, 2^26250401 is an apocalyptic number.

It is an amenable number.

26250401 is a deficient number, since it is larger than the sum of its proper divisors (1).

26250401 is an equidigital number, since it uses as much as digits as its factorization.

26250401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 26250401 is about 5123.5145164233. The cubic root of 26250401 is about 297.1976109718.

Adding to 26250401 its reverse (10405262), we get a palindrome (36655663).

The spelling of 26250401 in words is "twenty-six million, two hundred fifty thousand, four hundred one".