2991725456 has 20 divisors (see below), whose sum is σ = 5815115904. Its totient is φ = 1491050400.

The previous prime is 2991725453. The next prime is 2991725459. The reversal of 2991725456 is 6545271992.

It is an interprime number because it is at equal distance from previous prime (2991725453) and next prime (2991725459).

It is not an unprimeable number, because it can be changed into a prime (2991725453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295640 + ... + 305591.

Almost surely, 2^2991725456 is an apocalyptic number.

It is an amenable number.

2991725456 is a deficient number, since it is larger than the sum of its proper divisors (2823390448).

2991725456 is a wasteful number, since it uses less digits than its factorization.

2991725456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601550 (or 601544 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 50.

The square root of 2991725456 is about 54696.6676864322. The cubic root of 2991725456 is about 1440.9223540431.

The spelling of 2991725456 in words is "two billion, nine hundred ninety-one million, seven hundred twenty-five thousand, four hundred fifty-six".