38421880225 has 27 divisors (see below), whose sum is σ = 48128045817. Its totient is φ = 30427800480.

The previous prime is 38421880223. The next prime is 38421880241. The reversal of 38421880225 is 52208812483.

The square root of 38421880225 is 196015.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8859892129 + 29561988096 = 94127^2 + 171936^2 .

It is not a de Polignac number, because 38421880225 - 2¹ = 38421880223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38421880223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 193074676 + ... + 193074874.

Almost surely, 2^38421880225 is an apocalyptic number.

38421880225 is the 196015-th square number.

38421880225 is the 98008-th centered octagonal number.

It is an amenable number.

38421880225 is a deficient number, since it is larger than the sum of its proper divisors (9706165592).

38421880225 is an frugal number, since it uses more digits than its factorization.

38421880225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The spelling of 38421880225 in words is "thirty-eight billion, four hundred twenty-one million, eight hundred eighty thousand, two hundred twenty-five".