7125644613 has 16 divisors (see below), whose sum is σ = 10005811200. Its totient is φ = 4498199280.

The previous prime is 7125644611. The next prime is 7125644633. The reversal of 7125644613 is 3164465217.

It is a happy number.

It is not a de Polignac number, because 7125644613 - 2¹ = 7125644611 is a prime.

It is a super-2 number, since 2×7125644613² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 90718 + ... + 149936.

It is an arithmetic number, because the mean of its divisors is an integer number (625363200).

Almost surely, 2^7125644613 is an apocalyptic number.

It is an amenable number.

7125644613 is a deficient number, since it is larger than the sum of its proper divisors (2880166587).

7125644613 is a wasteful number, since it uses less digits than its factorization.

7125644613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61352.

The product of its digits is 120960, while the sum is 39.

The square root of 7125644613 is about 84413.5333521823. The cubic root of 7125644613 is about 1924.3085941542.

The spelling of 7125644613 in words is "seven billion, one hundred twenty-five million, six hundred forty-four thousand, six hundred thirteen".