125228421715 has 4 divisors (see below), whose sum is σ = 150274106064. Its totient is φ = 100182737368.

The previous prime is 125228421679. The next prime is 125228421737. The reversal of 125228421715 is 517124822521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 517124822521 = 3089 ⋅167408489.

It is a cyclic number.

It is not a de Polignac number, because 125228421715 - 2¹³ = 125228413523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12522842167 + ... + 12522842176.

It is an arithmetic number, because the mean of its divisors is an integer number (37568526516).

Almost surely, 2^125228421715 is an apocalyptic number.

125228421715 is a deficient number, since it is larger than the sum of its proper divisors (25045684349).

125228421715 is an equidigital number, since it uses as much as digits as its factorization.

125228421715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25045684348.

The product of its digits is 89600, while the sum is 40.

The spelling of 125228421715 in words is "one hundred twenty-five billion, two hundred twenty-eight million, four hundred twenty-one thousand, seven hundred fifteen".