40417225 has 6 divisors (see below), whose sum is σ = 50117390. Its totient is φ = 32333760.

The previous prime is 40417219. The next prime is 40417231. The reversal of 40417225 is 52271404.

It is an interprime number because it is at equal distance from previous prime (40417219) and next prime (40417231).

It can be written as a sum of positive squares in 3 ways, for example, as 5776 + 40411449 = 76^2 + 6357^2 .

It is not a de Polignac number, because 40417225 - 2¹⁷ = 40286153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1616689 = 40417225 / (4 + 0 + 4 + 1 + 7 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 40417225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 808320 + ... + 808369.

Almost surely, 2^40417225 is an apocalyptic number.

It is an amenable number.

40417225 is a deficient number, since it is larger than the sum of its proper divisors (9700165).

40417225 is a wasteful number, since it uses less digits than its factorization.

40417225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616699 (or 1616694 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 40417225 is about 6357.4542861117. The cubic root of 40417225 is about 343.1801533876.

Adding to 40417225 its reverse (52271404), we get a palindrome (92688629).

The spelling of 40417225 in words is "forty million, four hundred seventeen thousand, two hundred twenty-five".