26225621 has 2 divisors, whose sum is σ = 26225622. Its totient is φ = 26225620.

The previous prime is 26225587. The next prime is 26225623. The reversal of 26225621 is 12652262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20884900 + 5340721 = 4570^2 + 2311^2 .

It is a cyclic number.

It is not a de Polignac number, because 26225621 - 2¹⁸ = 25963477 is a prime.

Together with 26225623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26225623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13112810 + 13112811.

It is an arithmetic number, because the mean of its divisors is an integer number (13112811).

Almost surely, 2^26225621 is an apocalyptic number.

It is an amenable number.

26225621 is a deficient number, since it is larger than the sum of its proper divisors (1).

26225621 is an equidigital number, since it uses as much as digits as its factorization.

26225621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 26225621 is about 5121.0956835427. The cubic root of 26225621 is about 297.1040647772.

Adding to 26225621 its reverse (12652262), we get a palindrome (38877883).

The spelling of 26225621 in words is "twenty-six million, two hundred twenty-five thousand, six hundred twenty-one".