40530225 has 24 divisors (see below), whose sum is σ = 67308192. Its totient is φ = 21520000.

The previous prime is 40530223. The next prime is 40530247. The reversal of 40530225 is 52203504.

It is not a de Polignac number, because 40530225 - 2¹ = 40530223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40530223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17749 + ... + 19901.

It is an arithmetic number, because the mean of its divisors is an integer number (2804508).

Almost surely, 2^40530225 is an apocalyptic number.

It is an amenable number.

40530225 is a deficient number, since it is larger than the sum of its proper divisors (26777967).

40530225 is a wasteful number, since it uses less digits than its factorization.

40530225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417 (or 2412 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40530225 is about 6366.3352880602. The cubic root of 40530225 is about 343.4996811228.

Adding to 40530225 its reverse (52203504), we get a palindrome (92733729).

It can be divided in two parts, 40530 and 225, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 40530225 in words is "forty million, five hundred thirty thousand, two hundred twenty-five".