18674831425 has 12 divisors (see below), whose sum is σ = 23198382396. Its totient is φ = 14913032000.

The previous prime is 18674831419. The next prime is 18674831431. The reversal of 18674831425 is 52413847681.

It is an interprime number because it is at equal distance from previous prime (18674831419) and next prime (18674831431).

It can be written as a sum of positive squares in 6 ways, for example, as 7266028081 + 11408803344 = 85241^2 + 106812^2 .

It is not a de Polignac number, because 18674831425 - 2⁷ = 18674831297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 656626 + ... + 684475.

It is an arithmetic number, because the mean of its divisors is an integer number (1933198533).

Almost surely, 2^18674831425 is an apocalyptic number.

It is an amenable number.

18674831425 is a deficient number, since it is larger than the sum of its proper divisors (4523550971).

18674831425 is a wasteful number, since it uses less digits than its factorization.

18674831425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341668 (or 1341663 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The spelling of 18674831425 in words is "eighteen billion, six hundred seventy-four million, eight hundred thirty-one thousand, four hundred twenty-five".