7444625640 has 32 divisors (see below), whose sum is σ = 22333877280. Its totient is φ = 1985233472.

The previous prime is 7444625609. The next prime is 7444625651. The reversal of 7444625640 is 465264447.

It is a junction number, because it is equal to n+sod(n) for n = 7444625592 and 7444625601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31019154 + ... + 31019393.

It is an arithmetic number, because the mean of its divisors is an integer number (697933665).

Almost surely, 2^7444625640 is an apocalyptic number.

It is an amenable number.

7444625640 is an abundant number, since it is smaller than the sum of its proper divisors (14889251640).

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

7444625640 is a wasteful number, since it uses less digits than its factorization.

7444625640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62038561 (or 62038557 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 42.

The square root of 7444625640 is about 86282.2440598296. The cubic root of 7444625640 is about 1952.6045092301.

The spelling of 7444625640 in words is "seven billion, four hundred forty-four million, six hundred twenty-five thousand, six hundred forty".