125816444227 has 4 divisors (see below), whose sum is σ = 125857875136. Its totient is φ = 125775013320.

The previous prime is 125816444197. The next prime is 125816444231. The reversal of 125816444227 is 722444618521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722444618521 = 163019 ⋅4431659.

It is a cyclic number.

It is not a de Polignac number, because 125816444227 - 2²³ = 125808055619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125816444267) 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, 20710899 + ... + 20716972.

It is an arithmetic number, because the mean of its divisors is an integer number (31464468784).

Almost surely, 2^125816444227 is an apocalyptic number.

125816444227 is a deficient number, since it is larger than the sum of its proper divisors (41430909).

125816444227 is an equidigital number, since it uses as much as digits as its factorization.

125816444227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41430908.

The product of its digits is 860160, while the sum is 46.

The spelling of 125816444227 in words is "one hundred twenty-five billion, eight hundred sixteen million, four hundred forty-four thousand, two hundred twenty-seven".