385287225 has 48 divisors (see below), whose sum is σ = 677426880. Its totient is φ = 192672000.

The previous prime is 385287223. The next prime is 385287229. The reversal of 385287225 is 522782583.

It is not a de Polignac number, because 385287225 - 2¹ = 385287223 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (385287223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142587 + ... + 145263.

It is an arithmetic number, because the mean of its divisors is an integer number (14113060).

Almost surely, 2^385287225 is an apocalyptic number.

It is an amenable number.

385287225 is a deficient number, since it is larger than the sum of its proper divisors (292139655).

385287225 is a wasteful number, since it uses less digits than its factorization.

385287225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810 (or 2805 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 385287225 is about 19628.7346764890. The cubic root of 385287225 is about 727.6594990443.

It can be divided in two parts, 38528 and 7225, that added together give a triangular number (45753 = T₃₀₂).

The spelling of 385287225 in words is "three hundred eighty-five million, two hundred eighty-seven thousand, two hundred twenty-five".