381825225 has 24 divisors (see below), whose sum is σ = 701428320. Its totient is φ = 203639760.

The previous prime is 381825221. The next prime is 381825229. The reversal of 381825225 is 522528183.

381825225 is a `hidden beast` number, since 381 + 8 + 252 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (381825221) and next prime (381825229).

It is not a de Polignac number, because 381825225 - 2² = 381825221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381825225.

It is not an unprimeable number, because it can be changed into a prime (381825221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282159 + ... + 283508.

It is an arithmetic number, because the mean of its divisors is an integer number (29226180).

Almost surely, 2^381825225 is an apocalyptic number.

It is an amenable number.

381825225 is a deficient number, since it is larger than the sum of its proper divisors (319603095).

381825225 is a wasteful number, since it uses less digits than its factorization.

381825225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565686 (or 565675 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 381825225 is about 19540.3486406973. The cubic root of 381825225 is about 725.4734758961.

The spelling of 381825225 in words is "three hundred eighty-one million, eight hundred twenty-five thousand, two hundred twenty-five".