7725464428 has 24 divisors (see below), whose sum is σ = 15616180944. Its totient is φ = 3305011200.

The previous prime is 7725464407. The next prime is 7725464449. The reversal of 7725464428 is 8244645277.

It is an interprime number because it is at equal distance from previous prime (7725464407) and next prime (7725464449).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5163333 + ... + 5164828.

It is an arithmetic number, because the mean of its divisors is an integer number (650674206).

Almost surely, 2^7725464428 is an apocalyptic number.

It is an amenable number.

7725464428 is an abundant number, since it is smaller than the sum of its proper divisors (7890716516).

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

7725464428 is a wasteful number, since it uses less digits than its factorization.

7725464428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10328193 (or 10328191 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 49.

The square root of 7725464428 is about 87894.6211551082. The cubic root of 7725464428 is about 1976.8552286292.

The spelling of 7725464428 in words is "seven billion, seven hundred twenty-five million, four hundred sixty-four thousand, four hundred twenty-eight".