26624249 has 2 divisors, whose sum is σ = 26624250. Its totient is φ = 26624248.

The previous prime is 26624239. The next prime is 26624251. The reversal of 26624249 is 94242662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25755625 + 868624 = 5075^2 + 932^2 .

It is a cyclic number.

It is not a de Polignac number, because 26624249 - 2²⁰ = 25575673 is a prime.

Together with 26624251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26624239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13312124 + 13312125.

It is an arithmetic number, because the mean of its divisors is an integer number (13312125).

Almost surely, 2^26624249 is an apocalyptic number.

It is an amenable number.

26624249 is a deficient number, since it is larger than the sum of its proper divisors (1).

26624249 is an equidigital number, since it uses as much as digits as its factorization.

26624249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 26624249 is about 5159.8690874866. The cubic root of 26624249 is about 298.6018234272.

The spelling of 26624249 in words is "twenty-six million, six hundred twenty-four thousand, two hundred forty-nine".