381538425 has 12 divisors (see below), whose sum is σ = 630810320. Its totient is φ = 203487120.

The previous prime is 381538403. The next prime is 381538439. The reversal of 381538425 is 524835183.

It is not a de Polignac number, because 381538425 - 2⁵ = 381538393 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2543515 + ... + 2543664.

Almost surely, 2^381538425 is an apocalyptic number.

It is an amenable number.

381538425 is a deficient number, since it is larger than the sum of its proper divisors (249271895).

381538425 is a wasteful number, since it uses less digits than its factorization.

381538425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087192 (or 5087187 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 381538425 is about 19533.0086008275. The cubic root of 381538425 is about 725.2917890092.

The spelling of 381538425 in words is "three hundred eighty-one million, five hundred thirty-eight thousand, four hundred twenty-five".