125263776389 has 4 divisors (see below), whose sum is σ = 125291923680. Its totient is φ = 125235629100.

The previous prime is 125263776371. The next prime is 125263776431. The reversal of 125263776389 is 983677362521.

It is a happy number.

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: 983677362521 = 7 ⋅140525337503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125263776389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125263776359) 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 in 3 ways as a sum of consecutive naturals, for example, 14066969 + ... + 14075870.

It is an arithmetic number, because the mean of its divisors is an integer number (31322980920).

Almost surely, 2^125263776389 is an apocalyptic number.

It is an amenable number.

125263776389 is a deficient number, since it is larger than the sum of its proper divisors (28147291).

125263776389 is an equidigital number, since it uses as much as digits as its factorization.

125263776389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28147290.

The product of its digits is 22861440, while the sum is 59.

The spelling of 125263776389 in words is "one hundred twenty-five billion, two hundred sixty-three million, seven hundred seventy-six thousand, three hundred eighty-nine".