152505231509 has 2 divisors, whose sum is σ = 152505231510. Its totient is φ = 152505231508.

The previous prime is 152505231449. The next prime is 152505231583. The reversal of 152505231509 is 905132505251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145525464484 + 6979767025 = 381478^2 + 83545^2 .

It is a cyclic number.

It is not a de Polignac number, because 152505231509 - 2²⁰ = 152504182933 is a prime.

It is a super-2 number, since 2×152505231509² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152505231209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76252615754 + 76252615755.

It is an arithmetic number, because the mean of its divisors is an integer number (76252615755).

Almost surely, 2^152505231509 is an apocalyptic number.

It is an amenable number.

152505231509 is a deficient number, since it is larger than the sum of its proper divisors (1).

152505231509 is an equidigital number, since it uses as much as digits as its factorization.

152505231509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 152505231509 in words is "one hundred fifty-two billion, five hundred five million, two hundred thirty-one thousand, five hundred nine".