40243225 has 24 divisors (see below), whose sum is σ = 55353600. Its totient is φ = 28776000.

The previous prime is 40243223. The next prime is 40243243. The reversal of 40243225 is 52234204.

It is not a de Polignac number, because 40243225 - 2¹ = 40243223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40243196 and 40243205.

It is not an unprimeable number, because it can be changed into a prime (40243223) 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, 15576 + ... + 17974.

It is an arithmetic number, because the mean of its divisors is an integer number (2306400).

Almost surely, 2^40243225 is an apocalyptic number.

It is an amenable number.

40243225 is a deficient number, since it is larger than the sum of its proper divisors (15110375).

40243225 is a wasteful number, since it uses less digits than its factorization.

40243225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481 (or 2476 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 40243225 is about 6343.7548029538. The cubic root of 40243225 is about 342.6869705696.

Adding to 40243225 its reverse (52234204), we get a palindrome (92477429).

The spelling of 40243225 in words is "forty million, two hundred forty-three thousand, two hundred twenty-five".