125571631411 has 4 divisors (see below), whose sum is σ = 126124810632. Its totient is φ = 125018452192.

The previous prime is 125571631391. The next prime is 125571631447. The reversal of 125571631411 is 114136175521.

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

It is a cyclic number.

It is not a de Polignac number, because 125571631411 - 2³⁵ = 91211893043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125571631711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276589270 + ... + 276589723.

It is an arithmetic number, because the mean of its divisors is an integer number (31531202658).

Almost surely, 2^125571631411 is an apocalyptic number.

125571631411 is a deficient number, since it is larger than the sum of its proper divisors (553179221).

125571631411 is an equidigital number, since it uses as much as digits as its factorization.

125571631411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553179220.

The product of its digits is 25200, while the sum is 37.

The spelling of 125571631411 in words is "one hundred twenty-five billion, five hundred seventy-one million, six hundred thirty-one thousand, four hundred eleven".