125642214671 has 2 divisors, whose sum is σ = 125642214672. Its totient is φ = 125642214670.

The previous prime is 125642214589. The next prime is 125642214707. The reversal of 125642214671 is 176412246521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125642214671 - 2¹⁰ = 125642213647 is a prime.

It is a super-2 number, since 2×125642214671² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125642214371) by changing a digit.

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, 62821107335 + 62821107336.

It is an arithmetic number, because the mean of its divisors is an integer number (62821107336).

Almost surely, 2^125642214671 is an apocalyptic number.

125642214671 is a deficient number, since it is larger than the sum of its proper divisors (1).

125642214671 is an equidigital number, since it uses as much as digits as its factorization.

125642214671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The spelling of 125642214671 in words is "one hundred twenty-five billion, six hundred forty-two million, two hundred fourteen thousand, six hundred seventy-one".