381800925 has 48 divisors (see below), whose sum is σ = 765159360. Its totient is φ = 185112000.

The previous prime is 381800893. The next prime is 381800959. The reversal of 381800925 is 529008183.

It is not a de Polignac number, because 381800925 - 2⁵ = 381800893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381800925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18286 + ... + 33135.

It is an arithmetic number, because the mean of its divisors is an integer number (15940820).

Almost surely, 2^381800925 is an apocalyptic number.

It is an amenable number.

381800925 is an abundant number, since it is smaller than the sum of its proper divisors (383358435).

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

381800925 is a wasteful number, since it uses less digits than its factorization.

381800925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51451 (or 51440 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 381800925 is about 19539.7268404653. The cubic root of 381800925 is about 725.4580854519.

The spelling of 381800925 in words is "three hundred eighty-one million, eight hundred thousand, nine hundred twenty-five".