38425681 has 4 divisors (see below), whose sum is σ = 43915072. Its totient is φ = 32936292.

The previous prime is 38425643. The next prime is 38425687. The reversal of 38425681 is 18652483.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38425681 - 2⁷ = 38425553 is a prime.

It is a super-2 number, since 2×38425681² = 2953065920627522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38425681.

It is not an unprimeable number, because it can be changed into a prime (38425687) 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, 2744685 + ... + 2744698.

It is an arithmetic number, because the mean of its divisors is an integer number (10978768).

Almost surely, 2^38425681 is an apocalyptic number.

It is an amenable number.

38425681 is a deficient number, since it is larger than the sum of its proper divisors (5489391).

38425681 is an equidigital number, since it uses as much as digits as its factorization.

38425681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489390.

The product of its digits is 46080, while the sum is 37.

The square root of 38425681 is about 6198.8451343779. The cubic root of 38425681 is about 337.4482583688.

The spelling of 38425681 in words is "thirty-eight million, four hundred twenty-five thousand, six hundred eighty-one".