4225381 has 2 divisors, whose sum is σ = 4225382. Its totient is φ = 4225380.

The previous prime is 4225373. The next prime is 4225411. The reversal of 4225381 is 1835224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3940225 + 285156 = 1985^2 + 534^2 .

It is a cyclic number.

It is not a de Polignac number, because 4225381 - 2³ = 4225373 is a prime.

It is a super-2 number, since 2×4225381² = 35707689190322, which contains 22 as substring.

4225381 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4225301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112690 + 2112691.

It is an arithmetic number, because the mean of its divisors is an integer number (2112691).

Almost surely, 2^4225381 is an apocalyptic number.

It is an amenable number.

4225381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4225381 is an equidigital number, since it uses as much as digits as its factorization.

4225381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 4225381 is about 2055.5731560808. The cubic root of 4225381 is about 161.6672155483.

The spelling of 4225381 in words is "four million, two hundred twenty-five thousand, three hundred eighty-one".