40015225 has 12 divisors (see below), whose sum is σ = 49724496. Its totient is φ = 31944080.

The previous prime is 40015219. The next prime is 40015247. The reversal of 40015225 is 52251004.

40015225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-40015225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12654 + ... + 15496.

It is an arithmetic number, because the mean of its divisors is an integer number (4143708).

Almost surely, 2^40015225 is an apocalyptic number.

It is an amenable number.

40015225 is a deficient number, since it is larger than the sum of its proper divisors (9709271).

40015225 is a wasteful number, since it uses less digits than its factorization.

40015225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416 (or 3411 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 40015225 is about 6325.7588477589. The cubic root of 40015225 is about 342.0385744710.

Adding to 40015225 its reverse (52251004), we get a palindrome (92266229).

It can be divided in two parts, 400 and 15225, that added together give a 6-th power (15625 = 5⁶).

The spelling of 40015225 in words is "forty million, fifteen thousand, two hundred twenty-five".