22485251 has 2 divisors, whose sum is σ = 22485252. Its totient is φ = 22485250.

The previous prime is 22485193. The next prime is 22485263. The reversal of 22485251 is 15258422.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22485251 is a prime.

It is not a weakly prime, because it can be changed into another prime (22485451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11242625 + 11242626.

It is an arithmetic number, because the mean of its divisors is an integer number (11242626).

Almost surely, 2^22485251 is an apocalyptic number.

22485251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22485251 is an equidigital number, since it uses as much as digits as its factorization.

22485251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6400, while the sum is 29.

The square root of 22485251 is about 4741.8615542844. The cubic root of 22485251 is about 282.2491092235.

The spelling of 22485251 in words is "twenty-two million, four hundred eighty-five thousand, two hundred fifty-one".