26275409 has 2 divisors, whose sum is σ = 26275410. Its totient is φ = 26275408.

The previous prime is 26275399. The next prime is 26275427. The reversal of 26275409 is 90457262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26214400 + 61009 = 5120^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 26275409 - 2⁸ = 26275153 is a prime.

It is not a weakly prime, because it can be changed into another prime (26275429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13137704 + 13137705.

It is an arithmetic number, because the mean of its divisors is an integer number (13137705).

Almost surely, 2^26275409 is an apocalyptic number.

It is an amenable number.

26275409 is a deficient number, since it is larger than the sum of its proper divisors (1).

26275409 is an equidigital number, since it uses as much as digits as its factorization.

26275409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 26275409 is about 5125.9544477102. The cubic root of 26275409 is about 297.2919582153.

The spelling of 26275409 in words is "twenty-six million, two hundred seventy-five thousand, four hundred nine".