1225024849 has 2 divisors, whose sum is σ = 1225024850. Its totient is φ = 1225024848.

The previous prime is 1225024831. The next prime is 1225024883. The reversal of 1225024849 is 9484205221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1223250625 + 1774224 = 34975^2 + 1332^2 .

It is an emirp because it is prime and its reverse (9484205221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1225024849 - 2⁵ = 1225024817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225024649) 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, 612512424 + 612512425.

It is an arithmetic number, because the mean of its divisors is an integer number (612512425).

Almost surely, 2^1225024849 is an apocalyptic number.

It is an amenable number.

1225024849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225024849 is an equidigital number, since it uses as much as digits as its factorization.

1225024849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1225024849 is about 35000.3549839141. The cubic root of 1225024849 is about 1069.9947153784.

The spelling of 1225024849 in words is "one billion, two hundred twenty-five million, twenty-four thousand, eight hundred forty-nine".