26255197 has 2 divisors, whose sum is σ = 26255198. Its totient is φ = 26255196.

The previous prime is 26255147. The next prime is 26255209. The reversal of 26255197 is 79155262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15634116 + 10621081 = 3954^2 + 3259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26255197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26255137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13127598 + 13127599.

It is an arithmetic number, because the mean of its divisors is an integer number (13127599).

Almost surely, 2^26255197 is an apocalyptic number.

It is an amenable number.

26255197 is a deficient number, since it is larger than the sum of its proper divisors (1).

26255197 is an equidigital number, since it uses as much as digits as its factorization.

26255197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 26255197 is about 5123.9825331474. The cubic root of 26255197 is about 297.2157093994.

The spelling of 26255197 in words is "twenty-six million, two hundred fifty-five thousand, one hundred ninety-seven".