125687255378 has 4 divisors (see below), whose sum is σ = 188530883070. Its totient is φ = 62843627688.

The previous prime is 125687255363. The next prime is 125687255387. The reversal of 125687255378 is 873552786521.

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

It can be written as a sum of positive squares in only one way, i.e., 119455258129 + 6231997249 = 345623^2 + 78943^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 31421813843 + ... + 31421813846.

Almost surely, 2^125687255378 is an apocalyptic number.

125687255378 is a deficient number, since it is larger than the sum of its proper divisors (62843627692).

125687255378 is an equidigital number, since it uses as much as digits as its factorization.

125687255378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62843627691.

The product of its digits is 28224000, while the sum is 59.

The spelling of 125687255378 in words is "one hundred twenty-five billion, six hundred eighty-seven million, two hundred fifty-five thousand, three hundred seventy-eight".