125026019881 has 4 divisors (see below), whose sum is σ = 142886879872. Its totient is φ = 107165159892.

The previous prime is 125026019873. The next prime is 125026019893. The reversal of 125026019881 is 188910620521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188910620521 = 7 ⋅26987231503.

It is not a de Polignac number, because 125026019881 - 2³ = 125026019873 is a prime.

It is a super-2 number, since 2×125026019881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125026019821) 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, 8930429985 + ... + 8930429998.

It is an arithmetic number, because the mean of its divisors is an integer number (35721719968).

Almost surely, 2^125026019881 is an apocalyptic number.

It is an amenable number.

125026019881 is a deficient number, since it is larger than the sum of its proper divisors (17860859991).

125026019881 is an equidigital number, since it uses as much as digits as its factorization.

125026019881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17860859990.

The product of its (nonzero) digits is 69120, while the sum is 43.

The spelling of 125026019881 in words is "one hundred twenty-five billion, twenty-six million, nineteen thousand, eight hundred eighty-one".