38862725221 has 2 divisors, whose sum is σ = 38862725222. Its totient is φ = 38862725220.

The previous prime is 38862725197. The next prime is 38862725233. The reversal of 38862725221 is 12252726883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24060352996 + 14802372225 = 155114^2 + 121665^2 .

It is a cyclic number.

It is not a de Polignac number, because 38862725221 - 2¹¹ = 38862723173 is a prime.

It is a super-2 number, since 2×38862725221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38862728221) 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 as a sum of consecutive naturals, namely, 19431362610 + 19431362611.

It is an arithmetic number, because the mean of its divisors is an integer number (19431362611).

Almost surely, 2^38862725221 is an apocalyptic number.

It is an amenable number.

38862725221 is a deficient number, since it is larger than the sum of its proper divisors (1).

38862725221 is an equidigital number, since it uses as much as digits as its factorization.

38862725221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 46.

The spelling of 38862725221 in words is "thirty-eight billion, eight hundred sixty-two million, seven hundred twenty-five thousand, two hundred twenty-one".