125075750849 has 4 divisors (see below), whose sum is σ = 142943715264. Its totient is φ = 107207786436.

The previous prime is 125075750837. The next prime is 125075750861. The reversal of 125075750849 is 948057570521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 948057570521 = 131 ⋅7237080691.

It is an interprime number because it is at equal distance from previous prime (125075750837) and next prime (125075750861).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125075750849 is a prime.

It is a super-2 number, since 2×125075750849² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125075750849.

It is not an unprimeable number, because it can be changed into a prime (125075750249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8933982197 + ... + 8933982210.

It is an arithmetic number, because the mean of its divisors is an integer number (35735928816).

Almost surely, 2^125075750849 is an apocalyptic number.

It is an amenable number.

125075750849 is a deficient number, since it is larger than the sum of its proper divisors (17867964415).

125075750849 is an equidigital number, since it uses as much as digits as its factorization.

125075750849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17867964414.

The product of its (nonzero) digits is 3528000, while the sum is 53.

The spelling of 125075750849 in words is "one hundred twenty-five billion, seventy-five million, seven hundred fifty thousand, eight hundred forty-nine".