125612221733 has 4 divisors (see below), whose sum is σ = 125615662668. Its totient is φ = 125608780800.

The previous prime is 125612221729. The next prime is 125612221739. The reversal of 125612221733 is 337122216521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7177817284 + 118434404449 = 84722^2 + 344143^2 .

It is a cyclic number.

It is not a de Polignac number, because 125612221733 - 2² = 125612221729 is a prime.

It is a super-4 number, since 4×125612221733⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125612221693 and 125612221702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125612221739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1665116 + ... + 1738917.

It is an arithmetic number, because the mean of its divisors is an integer number (31403915667).

Almost surely, 2^125612221733 is an apocalyptic number.

It is an amenable number.

125612221733 is a deficient number, since it is larger than the sum of its proper divisors (3440935).

125612221733 is an equidigital number, since it uses as much as digits as its factorization.

125612221733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440934.

The product of its digits is 30240, while the sum is 35.

The spelling of 125612221733 in words is "one hundred twenty-five billion, six hundred twelve million, two hundred twenty-one thousand, seven hundred thirty-three".