7125862644 has 72 divisors (see below), whose sum is σ = 18134782848. Its totient is φ = 2359234560.

The previous prime is 7125862633. The next prime is 7125862649. The reversal of 7125862644 is 4462685217.

7125862644 is a `hidden beast` number, since 7 + 1 + 2 + 586 + 2 + 64 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 7125862644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7125862649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3986719 + ... + 3988505.

It is an arithmetic number, because the mean of its divisors is an integer number (251871984).

Almost surely, 2^7125862644 is an apocalyptic number.

It is an amenable number.

7125862644 is an abundant number, since it is smaller than the sum of its proper divisors (11008920204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7125862644 is a wasteful number, since it uses less digits than its factorization.

7125862644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485 (or 2480 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 7125862644 is about 84414.8247880667. The cubic root of 7125862644 is about 1924.3282206662.

The spelling of 7125862644 in words is "seven billion, one hundred twenty-five million, eight hundred sixty-two thousand, six hundred forty-four".