125117221772 has 24 divisors (see below), whose sum is σ = 226092303360. Its totient is φ = 60520744080.

The previous prime is 125117221771. The next prime is 125117221813. The reversal of 125117221772 is 277122711521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (125117221771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217943 + ... + 545649.

It is an arithmetic number, because the mean of its divisors is an integer number (9420512640).

Almost surely, 2^125117221772 is an apocalyptic number.

It is an amenable number.

125117221772 is a deficient number, since it is larger than the sum of its proper divisors (100975081588).

125117221772 is a wasteful number, since it uses less digits than its factorization.

125117221772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330821 (or 330819 counting only the distinct ones).

The product of its digits is 27440, while the sum is 38.

The spelling of 125117221772 in words is "one hundred twenty-five billion, one hundred seventeen million, two hundred twenty-one thousand, seven hundred seventy-two".