26072281 has 2 divisors, whose sum is σ = 26072282. Its totient is φ = 26072280.

The previous prime is 26072279. The next prime is 26072303. The reversal of 26072281 is 18227062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25160256 + 912025 = 5016^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 26072281 - 2¹ = 26072279 is a prime.

It is a super-2 number, since 2×26072281² = 1359527673085922, which contains 22 as substring.

Together with 26072279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26072231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13036140 + 13036141.

It is an arithmetic number, because the mean of its divisors is an integer number (13036141).

Almost surely, 2^26072281 is an apocalyptic number.

It is an amenable number.

26072281 is a deficient number, since it is larger than the sum of its proper divisors (1).

26072281 is an equidigital number, since it uses as much as digits as its factorization.

26072281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 26072281 is about 5106.1023295661. The cubic root of 26072281 is about 296.5238812668.

The spelling of 26072281 in words is "twenty-six million, seventy-two thousand, two hundred eighty-one".