4012040225 has 12 divisors (see below), whose sum is σ = 4986816240. Its totient is φ = 3201963600.

The previous prime is 4012040173. The next prime is 4012040233. The reversal of 4012040225 is 5220402104.

It is a happy number.

It is not a de Polignac number, because 4012040225 - 2¹² = 4012036129 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4012040197 and 4012040206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181031 + ... + 201980.

It is an arithmetic number, because the mean of its divisors is an integer number (415568020).

Almost surely, 2^4012040225 is an apocalyptic number.

It is an amenable number.

4012040225 is a deficient number, since it is larger than the sum of its proper divisors (974776015).

4012040225 is a wasteful number, since it uses less digits than its factorization.

4012040225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383440 (or 383435 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 4012040225 is about 63340.6680182645. The cubic root of 4012040225 is about 1588.9921787267.

Adding to 4012040225 its reverse (5220402104), we get a palindrome (9232442329).

The spelling of 4012040225 in words is "four billion, twelve million, forty thousand, two hundred twenty-five".