381225633 has 16 divisors (see below), whose sum is σ = 536075520. Its totient is φ = 240314256.

The previous prime is 381225587. The next prime is 381225701. The reversal of 381225633 is 336522183.

It is not a de Polignac number, because 381225633 - 2⁹ = 381225121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381225594 and 381225603.

It is not an unprimeable number, because it can be changed into a prime (381225133) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25066 + ... + 37292.

It is an arithmetic number, because the mean of its divisors is an integer number (33504720).

Almost surely, 2^381225633 is an apocalyptic number.

It is an amenable number.

381225633 is a deficient number, since it is larger than the sum of its proper divisors (154849887).

381225633 is a wasteful number, since it uses less digits than its factorization.

381225633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12796.

The product of its digits is 25920, while the sum is 33.

The square root of 381225633 is about 19525.0002048656. Note that the first 3 decimals coincide. The cubic root of 381225633 is about 725.0935324433.

The spelling of 381225633 in words is "three hundred eighty-one million, two hundred twenty-five thousand, six hundred thirty-three".