38225281 has 4 divisors (see below), whose sum is σ = 38389572. Its totient is φ = 38060992.

The previous prime is 38225227. The next prime is 38225303. The reversal of 38225281 is 18252283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18252283 = 7 ⋅2607469.

It can be written as a sum of positive squares in 2 ways, for example, as 25200400 + 13024881 = 5020^2 + 3609^2 .

It is a cyclic number.

It is not a de Polignac number, because 38225281 - 2⁷ = 38225153 is a prime.

It is a super-2 number, since 2×38225281² = 2922344215057922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38225221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81796 + ... + 82261.

It is an arithmetic number, because the mean of its divisors is an integer number (9597393).

Almost surely, 2^38225281 is an apocalyptic number.

It is an amenable number.

38225281 is a deficient number, since it is larger than the sum of its proper divisors (164291).

38225281 is a wasteful number, since it uses less digits than its factorization.

38225281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164290.

The product of its digits is 7680, while the sum is 31.

The square root of 38225281 is about 6182.6597027493. The cubic root of 38225281 is about 336.8606085552.

The spelling of 38225281 in words is "thirty-eight million, two hundred twenty-five thousand, two hundred eighty-one".