1552225789 has 2 divisors, whose sum is σ = 1552225790. Its totient is φ = 1552225788.

The previous prime is 1552225751. The next prime is 1552225823. The reversal of 1552225789 is 9875222551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1248420889 + 303804900 = 35333^2 + 17430^2 .

It is an emirp because it is prime and its reverse (9875222551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1552225789 - 2²³ = 1543837181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1552225709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776112894 + 776112895.

It is an arithmetic number, because the mean of its divisors is an integer number (776112895).

Almost surely, 2^1552225789 is an apocalyptic number.

It is an amenable number.

1552225789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552225789 is an equidigital number, since it uses as much as digits as its factorization.

1552225789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504000, while the sum is 46.

The square root of 1552225789 is about 39398.2967779065. The cubic root of 1552225789 is about 1157.8482178915.

The spelling of 1552225789 in words is "one billion, five hundred fifty-two million, two hundred twenty-five thousand, seven hundred eighty-nine".