39221425 has 12 divisors (see below), whose sum is σ = 48746880. Its totient is φ = 31304720.

The previous prime is 39221423. The next prime is 39221447. The reversal of 39221425 is 52412293.

39221425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39221425 - 2¹ = 39221423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39221393 and 39221402.

It is not an unprimeable number, because it can be changed into a prime (39221423) 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 in 11 ways as a sum of consecutive naturals, for example, 11016 + ... + 14134.

It is an arithmetic number, because the mean of its divisors is an integer number (4062240).

Almost surely, 2^39221425 is an apocalyptic number.

It is an amenable number.

39221425 is a deficient number, since it is larger than the sum of its proper divisors (9525455).

39221425 is a wasteful number, since it uses less digits than its factorization.

39221425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632 (or 3627 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 39221425 is about 6262.7010945757. The cubic root of 39221425 is about 339.7617275210.

The spelling of 39221425 in words is "thirty-nine million, two hundred twenty-one thousand, four hundred twenty-five".