125766255878 has 4 divisors (see below), whose sum is σ = 188649383820. Its totient is φ = 62883127938.

The previous prime is 125766255877. The next prime is 125766255929. The reversal of 125766255878 is 878552667521.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×125766255878² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 125766255878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125766255877) 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, 31441563968 + ... + 31441563971.

It is an arithmetic number, because the mean of its divisors is an integer number (47162345955).

Almost surely, 2^125766255878 is an apocalyptic number.

125766255878 is a deficient number, since it is larger than the sum of its proper divisors (62883127942).

125766255878 is an equidigital number, since it uses as much as digits as its factorization.

125766255878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62883127941.

The product of its digits is 56448000, while the sum is 62.

The spelling of 125766255878 in words is "one hundred twenty-five billion, seven hundred sixty-six million, two hundred fifty-five thousand, eight hundred seventy-eight".