2400225 has 12 divisors (see below), whose sum is σ = 3968496. Its totient is φ = 1280080.

The previous prime is 2400221. The next prime is 2400253. The reversal of 2400225 is 5220042.

It is not a de Polignac number, because 2400225 - 2² = 2400221 is a prime.

It is a super-2 number, since 2×2400225² = 11522160101250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2400221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15927 + ... + 16076.

It is an arithmetic number, because the mean of its divisors is an integer number (330708).

2^2400225 is an apocalyptic number.

2400225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2400225 is a deficient number, since it is larger than the sum of its proper divisors (1568271).

2400225 is a wasteful number, since it uses less digits than its factorization.

2400225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32016 (or 32011 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 2400225 is about 1549.2659552188. The cubic root of 2400225 is about 133.8907738416.

Adding to 2400225 its reverse (5220042), we get a palindrome (7620267).

The spelling of 2400225 in words is "two million, four hundred thousand, two hundred twenty-five".