381222625 has 32 divisors (see below), whose sum is σ = 545485824. Its totient is φ = 260568000.

The previous prime is 381222623. The next prime is 381222629. The reversal of 381222625 is 526222183.

It is not a de Polignac number, because 381222625 - 2¹ = 381222623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381222623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 404655 + ... + 405595.

It is an arithmetic number, because the mean of its divisors is an integer number (17046432).

Almost surely, 2^381222625 is an apocalyptic number.

381222625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

381222625 is a deficient number, since it is larger than the sum of its proper divisors (164263199).

381222625 is an equidigital number, since it uses as much as digits as its factorization.

381222625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426 (or 1416 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 381222625 is about 19524.9231752650. The cubic root of 381222625 is about 725.0916253601.

The spelling of 381222625 in words is "three hundred eighty-one million, two hundred twenty-two thousand, six hundred twenty-five".