381906451625 has 16 divisors (see below), whose sum is σ = 477415036800. Its totient is φ = 305015042800.

The previous prime is 381906451609. The next prime is 381906451651. The reversal of 381906451625 is 526154609183.

It is not a de Polignac number, because 381906451625 - 2⁴ = 381906451609 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2475419 + ... + 2625168.

It is an arithmetic number, because the mean of its divisors is an integer number (29838439800).

Almost surely, 2^381906451625 is an apocalyptic number.

It is an amenable number.

381906451625 is a deficient number, since it is larger than the sum of its proper divisors (95508585175).

381906451625 is an equidigital number, since it uses as much as digits as its factorization.

381906451625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101201 (or 5101191 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 381906451625 in words is "three hundred eighty-one billion, nine hundred six million, four hundred fifty-one thousand, six hundred twenty-five".