26422257 has 4 divisors (see below), whose sum is σ = 35229680. Its totient is φ = 17614836.

The previous prime is 26422241. The next prime is 26422283. The reversal of 26422257 is 75222462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 26422257 - 2⁴ = 26422241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26422237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4403707 + ... + 4403712.

It is an arithmetic number, because the mean of its divisors is an integer number (8807420).

Almost surely, 2^26422257 is an apocalyptic number.

It is an amenable number.

26422257 is a deficient number, since it is larger than the sum of its proper divisors (8807423).

26422257 is an equidigital number, since it uses as much as digits as its factorization.

26422257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8807422.

The product of its digits is 13440, while the sum is 30.

The square root of 26422257 is about 5140.2584565370. The cubic root of 26422257 is about 297.8447647258.

The spelling of 26422257 in words is "twenty-six million, four hundred twenty-two thousand, two hundred fifty-seven".