15155255249 has 2 divisors, whose sum is σ = 15155255250. Its totient is φ = 15155255248.

The previous prime is 15155255123. The next prime is 15155255257. The reversal of 15155255249 is 94255255151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14497845649 + 657409600 = 120407^2 + 25640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15155255249 is a prime.

It is not a weakly prime, because it can be changed into another prime (15155255449) 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, 7577627624 + 7577627625.

It is an arithmetic number, because the mean of its divisors is an integer number (7577627625).

Almost surely, 2^15155255249 is an apocalyptic number.

It is an amenable number.

15155255249 is a deficient number, since it is larger than the sum of its proper divisors (1).

15155255249 is an equidigital number, since it uses as much as digits as its factorization.

15155255249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450000, while the sum is 44.

The spelling of 15155255249 in words is "fifteen billion, one hundred fifty-five million, two hundred fifty-five thousand, two hundred forty-nine".