15075625756949 has 2 divisors, whose sum is σ = 15075625756950. Its totient is φ = 15075625756948.

The previous prime is 15075625756943. The next prime is 15075625757069. The reversal of 15075625756949 is 94965752657051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13348025715025 + 1727600041924 = 3653495^2 + 1314382^2 .

It is an emirp because it is prime and its reverse (94965752657051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15075625756949 - 2⁸ = 15075625756693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15075625756943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7537812878474 + 7537812878475.

It is an arithmetic number, because the mean of its divisors is an integer number (7537812878475).

Almost surely, 2^{15075625756949} is an apocalyptic number.

It is an amenable number.

15075625756949 is a deficient number, since it is larger than the sum of its proper divisors (1).

15075625756949 is an equidigital number, since it uses as much as digits as its factorization.

15075625756949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 714420000, while the sum is 71.

The spelling of 15075625756949 in words is "fifteen trillion, seventy-five billion, six hundred twenty-five million, seven hundred fifty-six thousand, nine hundred forty-nine".