125778275959 has 16 divisors (see below), whose sum is σ = 154400224000. Its totient is φ = 102135737592.

The previous prime is 125778275911. The next prime is 125778275969. The reversal of 125778275959 is 959572877521.

It is a de Polignac number, because none of the positive numbers 2^k-125778275959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125778275894 and 125778275903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125778275969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9643497 + ... + 9656530.

It is an arithmetic number, because the mean of its divisors is an integer number (9650014000).

Almost surely, 2^125778275959 is an apocalyptic number.

125778275959 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

125778275959 is a deficient number, since it is larger than the sum of its proper divisors (28621948041).

125778275959 is an equidigital number, since it uses as much as digits as its factorization.

125778275959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19300067 (or 19300053 counting only the distinct ones).

The product of its digits is 111132000, while the sum is 67.

The spelling of 125778275959 in words is "one hundred twenty-five billion, seven hundred seventy-eight million, two hundred seventy-five thousand, nine hundred fifty-nine".