7925421616 has 40 divisors (see below), whose sum is σ = 17553320960. Its totient is φ = 3395801664.

The previous prime is 7925421613. The next prime is 7925421619. The reversal of 7925421616 is 6161245297.

It is an interprime number because it is at equal distance from previous prime (7925421613) and next prime (7925421619).

It is not an unprimeable number, because it can be changed into a prime (7925421613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 923875 + ... + 932413.

It is an arithmetic number, because the mean of its divisors is an integer number (438833024).

Almost surely, 2^7925421616 is an apocalyptic number.

It is an amenable number.

7925421616 is an abundant number, since it is smaller than the sum of its proper divisors (9627899344).

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

7925421616 is a wasteful number, since it uses less digits than its factorization.

7925421616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16841 (or 16835 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 7925421616 is about 89024.8370737066. The cubic root of 7925421616 is about 1993.7657217459.

The spelling of 7925421616 in words is "seven billion, nine hundred twenty-five million, four hundred twenty-one thousand, six hundred sixteen".