125055531211 has 4 divisors (see below), whose sum is σ = 134675187472. Its totient is φ = 115435874952.

The previous prime is 125055531173. The next prime is 125055531217. The reversal of 125055531211 is 112135550521.

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 125055531211 - 2¹⁷ = 125055400139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125055531217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4809828111 + ... + 4809828136.

It is an arithmetic number, because the mean of its divisors is an integer number (33668796868).

Almost surely, 2^125055531211 is an apocalyptic number.

125055531211 is a deficient number, since it is larger than the sum of its proper divisors (9619656261).

125055531211 is an equidigital number, since it uses as much as digits as its factorization.

125055531211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9619656260.

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 125055531211 in words is "one hundred twenty-five billion, fifty-five million, five hundred thirty-one thousand, two hundred eleven".