15255825509 has 2 divisors, whose sum is σ = 15255825510. Its totient is φ = 15255825508.

The previous prime is 15255825499. The next prime is 15255825527. The reversal of 15255825509 is 90552855251.

15255825509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13958241025 + 1297584484 = 118145^2 + 36022^2 .

It is a cyclic number.

It is not a de Polignac number, because 15255825509 - 2²⁸ = 14987390053 is a prime.

It is a super-2 number, since 2×15255825509² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15255825539) 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, 7627912754 + 7627912755.

It is an arithmetic number, because the mean of its divisors is an integer number (7627912755).

Almost surely, 2^15255825509 is an apocalyptic number.

It is an amenable number.

15255825509 is a deficient number, since it is larger than the sum of its proper divisors (1).

15255825509 is an equidigital number, since it uses as much as digits as its factorization.

15255825509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900000, while the sum is 47.

The spelling of 15255825509 in words is "fifteen billion, two hundred fifty-five million, eight hundred twenty-five thousand, five hundred nine".