125422513211 has 4 divisors (see below), whose sum is σ = 126933627912. Its totient is φ = 123911398512.

The previous prime is 125422513207. The next prime is 125422513313. The reversal of 125422513211 is 112315224521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112315224521 = 17 ⋅6606777913.

It is a cyclic number.

It is not a de Polignac number, because 125422513211 - 2² = 125422513207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125422513201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755557226 + ... + 755557391.

It is an arithmetic number, because the mean of its divisors is an integer number (31733406978).

Almost surely, 2^125422513211 is an apocalyptic number.

125422513211 is a deficient number, since it is larger than the sum of its proper divisors (1511114701).

125422513211 is an equidigital number, since it uses as much as digits as its factorization.

125422513211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511114700.

The product of its digits is 4800, while the sum is 29.

Adding to 125422513211 its reverse (112315224521), we get a palindrome (237737737732).

The spelling of 125422513211 in words is "one hundred twenty-five billion, four hundred twenty-two million, five hundred thirteen thousand, two hundred eleven".