22648625491 has 2 divisors, whose sum is σ = 22648625492. Its totient is φ = 22648625490.

The previous prime is 22648625453. The next prime is 22648625567. The reversal of 22648625491 is 19452684622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22648625491 - 2¹⁵ = 22648592723 is a prime.

It is not a weakly prime, because it can be changed into another prime (22648625891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11324312745 + 11324312746.

It is an arithmetic number, because the mean of its divisors is an integer number (11324312746).

Almost surely, 2^22648625491 is an apocalyptic number.

22648625491 is a deficient number, since it is larger than the sum of its proper divisors (1).

22648625491 is an equidigital number, since it uses as much as digits as its factorization.

22648625491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 49.

The spelling of 22648625491 in words is "twenty-two billion, six hundred forty-eight million, six hundred twenty-five thousand, four hundred ninety-one".