7325215644 has 24 divisors (see below), whose sum is σ = 17455834368. Its totient is φ = 2389786480.

The previous prime is 7325215633. The next prime is 7325215661. The reversal of 7325215644 is 4465125237.

It is a super-2 number, since 2×7325215644² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 6493422 + ... + 6494549.

It is an arithmetic number, because the mean of its divisors is an integer number (727326432).

Almost surely, 2^7325215644 is an apocalyptic number.

It is an amenable number.

7325215644 is an abundant number, since it is smaller than the sum of its proper divisors (10130618724).

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

7325215644 is a wasteful number, since it uses less digits than its factorization.

7325215644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12988025 (or 12988023 counting only the distinct ones).

The product of its digits is 201600, while the sum is 39.

The square root of 7325215644 is about 85587.4736395461. The cubic root of 7325215644 is about 1942.1084212072.

The spelling of 7325215644 in words is "seven billion, three hundred twenty-five million, two hundred fifteen thousand, six hundred forty-four".