7125644612 has 6 divisors (see below), whose sum is σ = 12469878078. Its totient is φ = 3562822304.

The previous prime is 7125644611. The next prime is 7125644633. The reversal of 7125644612 is 2164465217.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5688779776 + 1436864836 = 75424^2 + 37906^2 .

It is a super-2 number, since 2×7125644612² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7125644611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890705573 + ... + 890705580.

It is an arithmetic number, because the mean of its divisors is an integer number (2078313013).

Almost surely, 2^7125644612 is an apocalyptic number.

It is an amenable number.

7125644612 is a deficient number, since it is larger than the sum of its proper divisors (5344233466).

7125644612 is a wasteful number, since it uses less digits than its factorization.

7125644612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781411157 (or 1781411155 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 7125644612 is about 84413.5333462591. The cubic root of 7125644612 is about 1924.3085940642.

The spelling of 7125644612 in words is "seven billion, one hundred twenty-five million, six hundred forty-four thousand, six hundred twelve".